You gotta wear 'em if you want them to save you when you'll need saving. If you don't wear them, ask yourself why. Too hot? Wet it down. To hindering? Buy a better fit. I suggest kayaking lifejackets. It is a good thing that I started to wear them BEFORE several events that might have drowned me. Here's one of them:
http://www.thebeachcats.com/modules...&mode=thread&order=0&thold=0

My latest adventure

GARY