Upwind Mainsail Trim: Shaping your Sail, Part 1 - Angle of Attack
Upwind Mainsail Trim: Shaping your Sail, Part 2 - Camber
Upwind Mainsail Trim: Shaping Your Sail, Part 4 - Controlling Twist
Upwind Mainsail Trim: Shaping Your Mainsail, Part 3 - Draft Shape and Position
How to Shape the Mainsail for Beating
The Key to Upwind Performance | Dynamic Tuning | North Sails Expert Charlie Cumbley & Cyclops Marine
RSYS/North Sails webinar 1: Mainsail Trim
3 Ways To Sail Faster! Mainsail Trim Techniques
Sailboat Racing Tips: Up To Speed on Mainsail Trim
Sail Trim (part 1): Forces of lift verses push
Sail Trim & Performance Sailing with Gary Jobson Trailer
Learn to Sail - Basic Sail Trim (including balanced sails)
How to Trim the Mainsail
Sailing aerodynamics: Sail trim variations
North Sails Live | Sail Trimming 101: Expert Advice from Drew Mitchell
Sailboat Racing Tips: For Your New Jib Trimmer
How Sails Work or How Sailboats Sail into the Wind
How to trim sails for going upwind. Tips from round the world sailor Brian Thompson
Sail Trim Masterclass
How Sails Really Work Video 2 - The Jib and Mainsail