what about leach tales? never been able to figure those out really
You want them flipping- foward, back, forward, back, forward, back.
If they're flying forward too much: oversheated and the sail is hooked. In light air the rememedy is to crank on the cunningham and open the top of the sail up to get a consistant shape.
If they're flying back too to much: Undersheated
or...... I'm talking completely outta my butt.....