North U Quick TRIM Guide
Written by Bill Gladstone, the waterproof Quick TRIM Guide is designed for on-board use. Sixteen panels provide step-by-step guidance on mainsail and jib trim. You'll achieve proper sail shape matched to the conditions using the full selection of sail controls. Also included are solutions to performance problems and a guide to rig tuning for both masthead and fractional rigs.
Folds to convenient 4 inch x 9 inch size.
Great for cruisers and racers.