I went down that road once when in a 1 knot drifter. Kept tightening and tightening until I had it real good and slow. The small boats walked away from me. On land, where I could see the sail better, I saw how badly I had hooked the sail. Moderation in all things. So that is why I tried the leech ribbons.

Next time, I will try some more downhaul and see how it affects that lower ribbon.