Some great tips from Brad Gibson's website
General Tips
Boat Maintenance for Better Radio Sailing
Leaky Boat - Let's Fix It
Hull Breather Tube
Building a foam plug from a lines plan
Choosing a design for Home Building
IOM Specific Tips
Sail and Rig Tuning
Mast Layout (used in tandem with sail and rig tuning document)
Rigging - What to Consider
Alternative Lines Plan - Rake Settings
Boat Maintenance for Better Radio Sailing
Leaky Boat - Let's Fix It
Hull Breather Tube
Building a foam plug from a lines plan
Choosing a design for Home Building
IOM Specific Tips
Sail and Rig Tuning
Mast Layout (used in tandem with sail and rig tuning document)
Rigging - What to Consider
Alternative Lines Plan - Rake Settings
A great series of Youtube Videos on rules and tactics
Episode 1: Introduction to Racing Rules https://youtu.be/tFCuwTuW200
Episode 2: The Start https://youtu.be/KanGIVzhym0
Episode 3: The Winward Leg https://youtu.be/wyOx5TAahw4
Episode 4: Marks part 1 https://youtu.be/BzmP5BMkVgE
Episode 5: The Run https://youtu.be/JQxeasGGr-s
Episode 6: Marks part 2 https://youtu.be/xMTYEgv8WjE
Episode 2: The Start https://youtu.be/KanGIVzhym0
Episode 3: The Winward Leg https://youtu.be/wyOx5TAahw4
Episode 4: Marks part 1 https://youtu.be/BzmP5BMkVgE
Episode 5: The Run https://youtu.be/JQxeasGGr-s
Episode 6: Marks part 2 https://youtu.be/xMTYEgv8WjE