Listen to Michael...
...and learn to reef. Reef early. Reef often. I sail my 240 in 20+ knots all the time, with a reef tucked into the main. Wind is not the issue with capsizing - it's the waves. They'll have to be big (6 feet), breaking and hit you broadsides to knock the boat over.I know of no documented case of an H240 capsizing. If anyone can correct me, please do.