I find it hard to tack in anything above 12kts for some reason. I think I am turning too fast and stalling the rudders which basically all but stops me... then I have to back the rudders and mainsail to get going again, very frustrating. What do you guys generally turn your rudders to for a tack, 30/45/60 degree's??? I have seen some guys put a limiting rope on their tiller cross bar so they can't stall the rudders!!!