Thistlebase
Basic Sail Trim Guides
A comprehensive guide to sail trimming for different wind conditions (light air, moderate, and heavy air), covering jib and main sail setup, mainsail trim, traveler use, boom vang settings, and tactical adjustments. Includes technical diagrams of sail flow patterns.
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This is a summary. The full article text is © the Thistle Class Association — read the original scan via the link above.