Hey, you know it --- and these guys (in the Howe Sound tragedy) were super-fit, athletic types. If they couldn't survive more than 20 minutes/half an hour, how long could a guy like me expect to last for? I'm not all flabby or anything either, but I'm surely no extreme athlete. Yeah, it's a drysuit for me. Despite the expense and the encumberment, I'm getting one before my next exposed crossing of any length.