Flatter sail on a multi since you need speed, not power to push lead through the water. Also less camber for wind to move across. On the other hand - waves, medium winds, add camber and power up the sails. Once you get into the wind speeds of just staying upright, flatten them again to reduce the power. Kidnd of rule of thumb, and somewhat influenced by leadfree sialing on a multi. Same goes for ice boats - flat sail = fast !

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< Message edited by Justaddwata -- 1/2/2008 7:44:38 PM >