hey i did one of them this summer too, i was flyin a hull, solo, and it was quite rough, when all of the sudden my leeward hull dives. when this happened, i went flying from one end of the boat to the other, due to the extreme change in speed and the fact that my windward hull spins around and then dives as well. i tried to correct myself using the rudders and dumping the mainsheet, but i was flyin through the air my rudders were out of the water. when i landed back on the railing, i have just enough time to see my boat has come about, all the battens pop over, and the boat dumps on top of me... oh and also i was too light and the wind was too strong to keep it from turtling... ahhh... good times...