Patrick, I wouldn't worry about flipping your 31. It would take a lot. We had the 28R in about 30 knots in the gulf outside the pass, one time, no reef, jib. The goal was to get the main hull flying, not steadily, but significantly popping in and out of the water. The general rule of thumb from what I can figure out so far, is reef in about 25knots and up. Donhaul depowers quite a bit, downwind in breeze the speeds are the same realtive to 90 degree angle in big breeze with chute or no chute, however the spin allows you to carry the apparent farther forward which brings you farther downwind. So if it honking, you might want to consider not putting the chute up. Enjoy the 31, it is a great boat. Craig