diff --git a/Scripts/Engines/CannedEvil/ChampionSpawn.cs b/Scripts/Engines/CannedEvil/ChampionSpawn.cs
index a81e2f41c..68d09b447 100644
--- a/Scripts/Engines/CannedEvil/ChampionSpawn.cs
+++ b/Scripts/Engines/CannedEvil/ChampionSpawn.cs
@@ -5,6 +5,7 @@ using Server.Gumps;
 using Server.Items;
 using Server.Mobiles;
 using Server.Regions;
+using System.Collections.Generic;
 
 namespace Server.Engines.CannedEvil
 {
@@ -13,9 +14,9 @@ namespace Server.Engines.CannedEvil
 		private bool m_Active;
 		private bool m_RandomizeType;
 		private ChampionSpawnType m_Type;
-		private ArrayList m_Creatures;
-		private ArrayList m_RedSkulls;
-		private ArrayList m_WhiteSkulls;
+		private List<Mobile> m_Creatures;
+		private List<Item> m_RedSkulls;
+		private List<Item> m_WhiteSkulls;
 		private ChampionPlatform m_Platform;
 		private ChampionAltar m_Altar;
 		private int m_Kills;
@@ -58,9 +59,9 @@ namespace Server.Engines.CannedEvil
 			Movable = false;
 			Visible = false;
 
-			m_Creatures = new ArrayList();
-			m_RedSkulls = new ArrayList();
-			m_WhiteSkulls = new ArrayList();
+			m_Creatures = new List<Mobile>();
+			m_RedSkulls = new List<Item>();
+			m_WhiteSkulls = new List<Item>();
 
 			m_Platform = new ChampionPlatform( this );
 			m_Altar = new ChampionAltar( this );
@@ -243,7 +244,7 @@ namespace Server.Engines.CannedEvil
 			{
 				for( int i = m_RedSkulls.Count - 1; i >= value; --i )
 				{
-					((Item)m_RedSkulls[i]).Delete();
+					m_RedSkulls[i].Delete();
 					m_RedSkulls.RemoveAt( i );
 				}
 
@@ -276,7 +277,7 @@ namespace Server.Engines.CannedEvil
 		{
 			for( int i = m_WhiteSkulls.Count - 1; i >= val; --i )
 			{
-				((Item)m_WhiteSkulls[i]).Delete();
+				m_WhiteSkulls[i].Delete();
 				m_WhiteSkulls.RemoveAt( i );
 			}
 
@@ -412,7 +413,7 @@ namespace Server.Engines.CannedEvil
 
 				for ( int i = 0; i < m_Creatures.Count; ++i )
 				{
-					Mobile m = (Mobile)m_Creatures[i];
+					Mobile m = m_Creatures[i];
 
 					if ( m.Deleted )
 					{
@@ -773,13 +774,13 @@ namespace Server.Engines.CannedEvil
 			if( m_RedSkulls != null )
 			{
 				for( int i = 0; i < m_RedSkulls.Count; ++i )
-					((Item)m_RedSkulls[i]).Location = GetRedSkullLocation( i );
+					m_RedSkulls[i].Location = GetRedSkullLocation( i );
 			}
 
 			if( m_WhiteSkulls != null )
 			{
 				for( int i = 0; i < m_WhiteSkulls.Count; ++i )
-					((Item)m_WhiteSkulls[i]).Location = GetWhiteSkullLocation( i );
+					m_WhiteSkulls[i].Location = GetWhiteSkullLocation( i );
 			}
 
 			m_SpawnArea.X += Location.X - oldLoc.X;
@@ -805,13 +806,13 @@ namespace Server.Engines.CannedEvil
 			if( m_RedSkulls != null )
 			{
 				for( int i = 0; i < m_RedSkulls.Count; ++i )
-					((Item)m_RedSkulls[i]).Map = Map;
+					m_RedSkulls[i].Map = Map;
 			}
 
 			if( m_WhiteSkulls != null )
 			{
 				for( int i = 0; i < m_WhiteSkulls.Count; ++i )
-					((Item)m_WhiteSkulls[i]).Map = Map;
+					m_WhiteSkulls[i].Map = Map;
 			}
 
 			UpdateRegion();
@@ -833,7 +834,7 @@ namespace Server.Engines.CannedEvil
 			if( m_RedSkulls != null )
 			{
 				for( int i = 0; i < m_RedSkulls.Count; ++i )
-					((Item)m_RedSkulls[i]).Delete();
+					m_RedSkulls[i].Delete();
 
 				m_RedSkulls.Clear();
 			}
@@ -841,7 +842,7 @@ namespace Server.Engines.CannedEvil
 			if( m_WhiteSkulls != null )
 			{
 				for( int i = 0; i < m_WhiteSkulls.Count; ++i )
-					((Item)m_WhiteSkulls[i]).Delete();
+					m_WhiteSkulls[i].Delete();
 
 				m_WhiteSkulls.Clear();
 			}
@@ -850,7 +851,7 @@ namespace Server.Engines.CannedEvil
 			{
 				for( int i = 0; i < m_Creatures.Count; ++i )
 				{
-					Mobile mob = (Mobile)m_Creatures[i];
+					Mobile mob = m_Creatures[i];
 
 					if( !mob.Player )
 						mob.Delete();
@@ -878,7 +879,7 @@ namespace Server.Engines.CannedEvil
 			writer.Write( (int)4 ); // version
 
 			writer.Write( m_ConfinedRoaming );
-			writer.Write( m_Idol );
+			writer.WriteItem<IdolOfTheChampion>( m_Idol );
 			writer.Write( m_HasBeenAdvanced );
 			writer.Write( m_SpawnArea );
 
@@ -889,11 +890,11 @@ namespace Server.Engines.CannedEvil
 
 			writer.Write( (bool)m_Active );
 			writer.Write( (int)m_Type );
-			writer.WriteMobileList( m_Creatures, true );
-			writer.WriteItemList( m_RedSkulls, true );
-			writer.WriteItemList( m_WhiteSkulls, true );
-			writer.Write( m_Platform );
-			writer.Write( m_Altar );
+			writer.Write( m_Creatures, true );
+			writer.Write( m_RedSkulls, true );
+			writer.Write( m_WhiteSkulls, true );
+			writer.WriteItem<ChampionPlatform>( m_Platform );
+			writer.WriteItem<ChampionAltar>( m_Altar );
 			writer.Write( m_ExpireDelay );
 			writer.WriteDeltaTime( m_ExpireTime );
 			writer.Write( m_Champion );
@@ -916,7 +917,7 @@ namespace Server.Engines.CannedEvil
 				case 4:
 				{
 					m_ConfinedRoaming = reader.ReadBool();
-					m_Idol = reader.ReadItem() as IdolOfTheChampion;
+					m_Idol = reader.ReadItem<IdolOfTheChampion>();
 					m_HasBeenAdvanced = reader.ReadBool();
 
 					goto case 3;
@@ -953,11 +954,11 @@ namespace Server.Engines.CannedEvil
 
 					bool active = reader.ReadBool();
 					m_Type = (ChampionSpawnType)reader.ReadInt();
-					m_Creatures = reader.ReadMobileList();
-					m_RedSkulls = reader.ReadItemList();
-					m_WhiteSkulls = reader.ReadItemList();
-					m_Platform = reader.ReadItem() as ChampionPlatform;
-					m_Altar = reader.ReadItem() as ChampionAltar;
+					m_Creatures = reader.ReadStrongMobileList();
+					m_RedSkulls = reader.ReadStrongItemList();
+					m_WhiteSkulls = reader.ReadStrongItemList();
+					m_Platform = reader.ReadItem<ChampionPlatform>();
+					m_Altar = reader.ReadItem<ChampionAltar>();
 					m_ExpireDelay = reader.ReadTimeSpan();
 					m_ExpireTime = reader.ReadDeltaTime();
 					m_Champion = reader.ReadMobile();
diff --git a/Scripts/Engines/Doom/GauntletSpawner.cs b/Scripts/Engines/Doom/GauntletSpawner.cs
index 90a43d36e..d0bef3ea7 100644
--- a/Scripts/Engines/Doom/GauntletSpawner.cs
+++ b/Scripts/Engines/Doom/GauntletSpawner.cs
@@ -6,6 +6,7 @@ using Server.Mobiles;
 using Server.Network;
 using Server.Regions;
 using Server.Commands;
+using System.Collections.Generic;
 
 namespace Server.Engines.Doom
 {
@@ -30,10 +31,10 @@ namespace Server.Engines.Doom
 		private BaseDoor m_Door;
 		private BaseAddon m_Addon;
 		private GauntletSpawner m_Sequence;
-		private ArrayList m_Creatures;
+		private List<Mobile> m_Creatures;
 
 		private Rectangle2D m_RegionBounds;
-		private ArrayList m_Traps;
+		private List<BaseTrap> m_Traps;
 
 		private Region m_Region;
 
@@ -75,7 +76,7 @@ namespace Server.Engines.Doom
 
 				for ( int i = 0; i < m_Creatures.Count; ++i )
 				{
-					Mobile mob = (Mobile)m_Creatures[i];
+					Mobile mob = m_Creatures[i];
 
 					if ( !mob.Deleted )
 						return false;
@@ -163,13 +164,13 @@ namespace Server.Engines.Doom
 
 		private Timer m_Timer;
 
-		public ArrayList Creatures
+		public List<Mobile> Creatures
 		{
 			get{ return m_Creatures; }
 			set{ m_Creatures = value; }
 		}
 
-		public ArrayList Traps
+		public List<BaseTrap> Traps
 		{
 			get{ return m_Traps; }
 			set{ m_Traps = value; }
@@ -212,7 +213,7 @@ namespace Server.Engines.Doom
 		public virtual void ClearTraps()
 		{
 			for ( int i = 0; i < m_Traps.Count; ++i )
-				((Item)m_Traps[i]).Delete();
+				m_Traps[i].Delete();
 
 			m_Traps.Clear();
 		}
@@ -224,7 +225,7 @@ namespace Server.Engines.Doom
 			if ( map == null )
 				return;
 
-			Item trap = null;
+			BaseTrap trap = null;
 
 			int random = Utility.Random( 100 );
 
@@ -310,7 +311,7 @@ namespace Server.Engines.Doom
 		public virtual void ClearCreatures()
 		{
 			for ( int i = 0; i < m_Creatures.Count; ++i )
-				((Mobile)m_Creatures[i]).Delete();
+				m_Creatures[i].Delete();
 
 			m_Creatures.Clear();
 		}
@@ -419,8 +420,8 @@ namespace Server.Engines.Doom
 			Movable = false;
 
 			m_TypeName = typeName;
-			m_Creatures = new ArrayList();
-			m_Traps = new ArrayList();
+			m_Creatures = new List<Mobile>();
+			m_Traps = new List<BaseTrap>();
 		}
 
 		public GauntletSpawner( Serial serial ) : base( serial )
@@ -435,14 +436,14 @@ namespace Server.Engines.Doom
 
 			writer.Write( m_RegionBounds );
 
-			writer.WriteItemList( m_Traps, false );
+			writer.WriteItemList<BaseTrap>( m_Traps, false );
 
-			writer.WriteMobileList( m_Creatures, false );
+			writer.Write( m_Creatures, false );
 
 			writer.Write( m_TypeName );
-			writer.Write( m_Door );
-			writer.Write( m_Addon );
-			writer.Write( m_Sequence );
+			writer.WriteItem<BaseDoor>( m_Door );
+			writer.WriteItem<BaseAddon>( m_Addon );
+			writer.WriteItem<GauntletSpawner>( m_Sequence );
 
 			writer.Write( (int) m_State );
 		}
@@ -458,7 +459,7 @@ namespace Server.Engines.Doom
 				case 1:
 				{
 					m_RegionBounds = reader.ReadRect2D();
-					m_Traps = reader.ReadItemList();
+					m_Traps = reader.ReadStrongItemList<BaseTrap>();
 
 					goto case 0;
 				}
@@ -466,16 +467,16 @@ namespace Server.Engines.Doom
 				{
 					if ( version < 1 )
 					{
-						m_Traps = new ArrayList();
+						m_Traps = new List<BaseTrap>();
 						m_RegionBounds = new Rectangle2D( X - 40, Y - 40, 80, 80 );
 					}
 
-					m_Creatures = reader.ReadMobileList();
+					m_Creatures = reader.ReadStrongMobileList();
 
 					m_TypeName = reader.ReadString();
-					m_Door = reader.ReadItem() as BaseDoor;
-					m_Addon = reader.ReadItem() as BaseAddon;
-					m_Sequence = reader.ReadItem() as GauntletSpawner;
+					m_Door = reader.ReadItem<BaseDoor>(); ;
+					m_Addon = reader.ReadItem<BaseAddon>(); ;
+					m_Sequence = reader.ReadItem<GauntletSpawner>();
 
 					State = (GauntletSpawnerState)reader.ReadInt();
 
diff --git a/Scripts/Items/Addons/BallotBox.cs b/Scripts/Items/Addons/BallotBox.cs
index 4237edf95..cca6b3c81 100644
--- a/Scripts/Items/Addons/BallotBox.cs
+++ b/Scripts/Items/Addons/BallotBox.cs
@@ -5,6 +5,7 @@ using Server.Multis;
 using Server.Gumps;
 using Server.Network;
 using Server.Prompts;
+using System.Collections.Generic;
 
 namespace Server.Items
 {
@@ -15,20 +16,20 @@ namespace Server.Items
 		public override int LabelNumber{ get{ return 1041006; } } // a ballot box
 
 		private string[] m_Topic;
-		private ArrayList m_Yes;
-		private ArrayList m_No;
+		private List<Mobile> m_Yes;
+		private List<Mobile> m_No;
 
 		public string[] Topic
 		{
 			get{ return m_Topic; }
 		}
 
-		public ArrayList Yes
+		public List<Mobile> Yes
 		{
 			get{ return m_Yes; }
 		}
 
-		public ArrayList No
+		public List<Mobile> No
 		{
 			get{ return m_No; }
 		}
@@ -37,8 +38,8 @@ namespace Server.Items
 		public BallotBox() : base( 0x9A8 )
 		{
 			m_Topic = new string[0];
-			m_Yes = new ArrayList();
-			m_No = new ArrayList();
+			m_Yes = new List<Mobile>();
+			m_No = new List<Mobile>();
 		}
 
 		public BallotBox( Serial serial ) : base( serial )
@@ -311,8 +312,8 @@ namespace Server.Items
 			for ( int i = 0; i < m_Topic.Length; i++ )
 				writer.Write( (string) m_Topic[i] );
 
-			writer.WriteMobileList( m_Yes, true );
-			writer.WriteMobileList( m_No, true );
+			writer.Write( m_Yes, true );
+			writer.Write( m_No, true );
 		}
 
 		public override void Deserialize( GenericReader reader )
@@ -326,8 +327,8 @@ namespace Server.Items
 			for ( int i = 0; i < m_Topic.Length; i++ )
 				m_Topic[i] = reader.ReadString();
 
-			m_Yes = reader.ReadMobileList();
-			m_No = reader.ReadMobileList();
+			m_Yes = reader.ReadStrongMobileList();
+			m_No = reader.ReadStrongMobileList();
 		}
 	}
 
diff --git a/Scripts/Items/Containers/TreasureMapChest.cs b/Scripts/Items/Containers/TreasureMapChest.cs
index 5c781259d..dc2847780 100644
--- a/Scripts/Items/Containers/TreasureMapChest.cs
+++ b/Scripts/Items/Containers/TreasureMapChest.cs
@@ -33,7 +33,7 @@ namespace Server.Items
 		private Mobile m_Owner;
 		private bool m_Temporary;
 
-		private ArrayList m_Guardians;
+		private List<Mobile> m_Guardians;
 
 		[CommandProperty( AccessLevel.GameMaster )]
 		public int Level{ get{ return m_Level; } set{ m_Level = value; } }
@@ -47,7 +47,7 @@ namespace Server.Items
 		[CommandProperty( AccessLevel.GameMaster )]
 		public bool Temporary{ get{ return m_Temporary; } set{ m_Temporary = value; } }
 
-		public ArrayList Guardians{ get{ return m_Guardians; } }
+		public List<Mobile> Guardians { get { return m_Guardians; } }
 
 		[Constructable]
 		public TreasureMapChest( int level ) : this( null, level, false )
@@ -61,7 +61,7 @@ namespace Server.Items
 			m_DeleteTime = DateTime.Now + TimeSpan.FromHours( 3.0 );
 
 			m_Temporary = temporary;
-			m_Guardians = new ArrayList();
+			m_Guardians = new List<Mobile>();
 
 			m_Timer = new DeleteTimer( this, m_DeleteTime );
 			m_Timer.Start();
@@ -342,7 +342,7 @@ namespace Server.Items
 
 			writer.Write( (int) 2 ); // version
 
-			writer.WriteMobileList( m_Guardians, true );
+			writer.Write( m_Guardians, true );
 			writer.Write( (bool) m_Temporary );
 
 			writer.Write( m_Owner );
@@ -362,7 +362,7 @@ namespace Server.Items
 			{
 				case 2:
 				{
-					m_Guardians = reader.ReadMobileList();
+					m_Guardians = reader.ReadStrongMobileList();
 					m_Temporary = reader.ReadBool();
 
 					goto case 1;
@@ -380,7 +380,7 @@ namespace Server.Items
 					m_Lifted = reader.ReadItemList();
 
 					if ( version < 2 )
-						m_Guardians = new ArrayList();
+						m_Guardians = new List<Mobile>();
 
 					break;
 				}
diff --git a/Scripts/Items/Misc/CommunicationCrystals.cs b/Scripts/Items/Misc/CommunicationCrystals.cs
index 109a8d218..f2193cb92 100644
--- a/Scripts/Items/Misc/CommunicationCrystals.cs
+++ b/Scripts/Items/Misc/CommunicationCrystals.cs
@@ -3,6 +3,7 @@ using System.Collections;
 using Server;
 using Server.Network;
 using Server.Targeting;
+using System.Collections.Generic;
 
 namespace Server.Items
 {
@@ -51,7 +52,7 @@ namespace Server.Items
 		public override int LabelNumber{ get{ return 1060740; } } // communication crystal
 
 		private int m_Charges;
-		private ArrayList m_Receivers;
+		private List<ReceiverCrystal> m_Receivers;
 
 		[CommandProperty( AccessLevel.GameMaster )]
 		public bool Active
@@ -75,7 +76,7 @@ namespace Server.Items
 			}
 		}
 
-		public ArrayList Receivers
+		public List<ReceiverCrystal> Receivers
 		{
 			get{ return m_Receivers; }
 		}
@@ -92,7 +93,7 @@ namespace Server.Items
 
 			m_Charges = charges;
 
-			m_Receivers = new ArrayList();
+			m_Receivers = new List<ReceiverCrystal>();
 		}
 
 		public BroadcastCrystal( Serial serial ) : base( serial )
@@ -233,7 +234,7 @@ namespace Server.Items
 				}
 				else if ( targeted == from )
 				{
-					foreach ( ReceiverCrystal receiver in new ArrayList( m_Crystal.Receivers ) )
+					foreach( ReceiverCrystal receiver in new List<ReceiverCrystal>( m_Crystal.Receivers ) )
 					{
 						receiver.Sender = null;
 					}
@@ -286,7 +287,7 @@ namespace Server.Items
 			writer.WriteEncodedInt( 0 ); // version
 
 			writer.WriteEncodedInt( m_Charges );
-			writer.WriteItemList( m_Receivers );
+			writer.WriteItemList<ReceiverCrystal>( m_Receivers );
 		}
 
 		public override void Deserialize( GenericReader reader )
@@ -296,7 +297,7 @@ namespace Server.Items
 			int version = reader.ReadEncodedInt();
 
 			m_Charges = reader.ReadEncodedInt();
-			m_Receivers = reader.ReadItemList();
+			m_Receivers = reader.ReadStrongItemList<ReceiverCrystal>();
 		}
 	}
 
@@ -468,7 +469,7 @@ namespace Server.Items
 
 			writer.WriteEncodedInt( 0 ); // version
 
-			writer.Write( (Item) m_Sender );
+			writer.WriteItem<BroadcastCrystal>( m_Sender );
 		}
 
 		public override void Deserialize( GenericReader reader )
@@ -477,7 +478,7 @@ namespace Server.Items
 
 			int version = reader.ReadEncodedInt();
 
-			m_Sender = (BroadcastCrystal) reader.ReadItem();
+			m_Sender = reader.ReadItem<BroadcastCrystal>();
 		}
 	}
 }
\ No newline at end of file
diff --git a/Scripts/Items/Misc/KeyRing.cs b/Scripts/Items/Misc/KeyRing.cs
index 424722325..2ead1e40b 100644
--- a/Scripts/Items/Misc/KeyRing.cs
+++ b/Scripts/Items/Misc/KeyRing.cs
@@ -2,6 +2,7 @@ using System;
 using System.Collections;
 using Server;
 using Server.Targeting;
+using System.Collections.Generic;
 
 namespace Server.Items
 {
@@ -9,16 +10,16 @@ namespace Server.Items
 	{
 		public static readonly int MaxKeys = 20;
 
-		private ArrayList m_Keys;
+		private List<Key> m_Keys;
 
-		public ArrayList Keys{ get{ return m_Keys; } }
+		public List<Key> Keys { get { return m_Keys; } }
 
 		[Constructable]
 		public KeyRing() : base( 0x1011 )
 		{
 			Weight = 1.0; // They seem to have no weight on OSI ?!
 
-			m_Keys = new ArrayList();
+			m_Keys = new List<Key>();
 		}
 
 		public override bool OnDragDrop( Mobile from, Item dropped )
@@ -131,7 +132,7 @@ namespace Server.Items
 
 			for ( int i = m_Keys.Count - 1; i >= 0; i-- )
 			{
-				Key key = (Key) m_Keys[i];
+				Key key = m_Keys[i];
 
 				if ( !key.Deleted && !cont.TryDropItem( from, key, true ) )
 					break;
@@ -146,7 +147,7 @@ namespace Server.Items
 		{
 			for ( int i = m_Keys.Count - 1; i >= 0; i-- )
 			{
-				Key key = (Key) m_Keys[i];
+				Key key = m_Keys[i];
 
 				if ( key.KeyValue == keyValue )
 				{
@@ -191,7 +192,7 @@ namespace Server.Items
 
 			writer.WriteEncodedInt( 0 ); // version
 
-			writer.WriteItemList( m_Keys );
+			writer.WriteItemList<Key>( m_Keys );
 		}
 
 		public override void Deserialize( GenericReader reader )
@@ -200,7 +201,7 @@ namespace Server.Items
 
 			int version = reader.ReadEncodedInt();
 
-			m_Keys = reader.ReadItemList();
+			m_Keys = reader.ReadStrongItemList<Key>();
 		}
 	}
 }
\ No newline at end of file
diff --git a/Scripts/Misc/Guild.cs b/Scripts/Misc/Guild.cs
index aa76e834d..714d30da3 100644
--- a/Scripts/Misc/Guild.cs
+++ b/Scripts/Misc/Guild.cs
@@ -1133,9 +1133,9 @@ namespace Server.Guilds
 			writer.WriteGuildList( m_WarDeclarations, true );
 			writer.WriteGuildList( m_WarInvitations, true );
 
-			writer.WriteMobileList( m_Members, true );
-			writer.WriteMobileList( m_Candidates, true );
-			writer.WriteMobileList( m_Accepted, true );
+			writer.Write( m_Members, true );
+			writer.Write( m_Candidates, true );
+			writer.Write( m_Accepted, true );
 
 			writer.Write( m_Guildstone );
 			writer.Write( m_Teleporter );
diff --git a/Scripts/Mobiles/Special/Harrower.cs b/Scripts/Mobiles/Special/Harrower.cs
index 2864b7905..33cb4372a 100644
--- a/Scripts/Mobiles/Special/Harrower.cs
+++ b/Scripts/Mobiles/Special/Harrower.cs
@@ -11,7 +11,7 @@ namespace Server.Mobiles
 	{
 		private bool m_TrueForm;
 		private Item m_GateItem;
-		private ArrayList m_Tentacles;
+		private List<HarrowerTentacles> m_Tentacles;
 		private Timer m_Timer;
 
 		private class SpawnEntry
@@ -106,7 +106,7 @@ namespace Server.Mobiles
 			SetSkill( SkillName.EvalInt, 120.0 );
 			SetSkill( SkillName.Meditation, 120.0 );
 
-			m_Tentacles = new ArrayList();
+			m_Tentacles = new List<HarrowerTentacles>();
 
 			m_Timer = new TeleportTimer( this );
 			m_Timer.Start();
@@ -187,7 +187,7 @@ namespace Server.Mobiles
 					if ( !ok )
 						continue;
 
-					BaseCreature spawn = new HarrowerTentacles( this );
+					HarrowerTentacles spawn = new HarrowerTentacles( this );
 
 					spawn.Team = this.Team;
 
@@ -226,7 +226,7 @@ namespace Server.Mobiles
 
 			writer.Write( m_TrueForm );
 			writer.Write( m_GateItem );
-			writer.WriteMobileList( m_Tentacles );
+			writer.WriteMobileList<HarrowerTentacles>( m_Tentacles );
 		}
 
 		public override void Deserialize( GenericReader reader )
@@ -241,7 +241,7 @@ namespace Server.Mobiles
 				{
 					m_TrueForm = reader.ReadBool();
 					m_GateItem = reader.ReadItem();
-					m_Tentacles = reader.ReadMobileList();
+					m_Tentacles = reader.ReadStrongMobileList<HarrowerTentacles>();
 
 					m_Timer = new TeleportTimer( this );
 					m_Timer.Start();
@@ -363,7 +363,7 @@ namespace Server.Mobiles
 
 					for ( int i = 0; i < m_Tentacles.Count; ++i )
 					{
-						Mobile m = (Mobile)m_Tentacles[i];
+						Mobile m = m_Tentacles[i];
 
 						if ( !m.Deleted )
 							m.Kill();
diff --git a/Scripts/Multis/Camps/BaseCamp.cs b/Scripts/Multis/Camps/BaseCamp.cs
index f938927f8..db9f5aa62 100644
--- a/Scripts/Multis/Camps/BaseCamp.cs
+++ b/Scripts/Multis/Camps/BaseCamp.cs
@@ -3,12 +3,14 @@ using System.Collections;
 using Server;
 using Server.Items;
 using Server.Mobiles;
+using System.Collections.Generic;
 
 namespace Server.Multis
 {
 	public abstract class BaseCamp : BaseMulti
 	{
-		private ArrayList m_Items, m_Mobiles;
+		private List<Item> m_Items;
+		private List<Mobile> m_Mobiles;
 		private DateTime m_DecayTime;
 		private Timer m_DecayTimer;
 
@@ -17,8 +19,8 @@ namespace Server.Multis
 
 		public BaseCamp( int multiID ) : base( multiID | 0x4000 )
 		{
-			m_Items = new ArrayList();
-			m_Mobiles = new ArrayList();
+			m_Items = new List<Item>();
+			m_Mobiles = new List<Mobile>();
 			RefreshDecay( true );
 
 			Timer.DelayCall( TimeSpan.Zero, new TimerCallback( CheckAddComponents ) );
@@ -104,10 +106,10 @@ namespace Server.Multis
 			base.OnAfterDelete();
 
 			for ( int i = 0; i < m_Items.Count; ++i )
-				((Item)m_Items[i]).Delete();
+				m_Items[i].Delete();
 
 			for ( int i = 0; i < m_Mobiles.Count; ++i )
-				((Mobile)m_Mobiles[i]).Delete();
+				m_Mobiles[i].Delete();
 
 			m_Items.Clear();
 			m_Mobiles.Clear();
@@ -123,8 +125,8 @@ namespace Server.Multis
 
 			writer.Write( (int) 0 ); // version
 
-			writer.WriteItemList( m_Items, true );
-			writer.WriteMobileList( m_Mobiles, true );
+			writer.Write( m_Items, true );
+			writer.Write( m_Mobiles, true );
 			writer.WriteDeltaTime( m_DecayTime );
 		}
 
@@ -138,8 +140,8 @@ namespace Server.Multis
 			{
 				case 0:
 				{
-					m_Items = reader.ReadItemList();
-					m_Mobiles = reader.ReadMobileList();
+					m_Items = reader.ReadStrongItemList();
+					m_Mobiles = reader.ReadStrongMobileList();
 					m_DecayTime = reader.ReadDeltaTime();
 
 					RefreshDecay( false );