Good posts here. Always be prepared to save yourself.

I would say you have about 5 minutes tops to get back on your boat before you are unable to save yourself. The amount of time varies greatly according to body mass. After 10 minutes you would have to be pulled from the water which a typical powerboater probably won't be able to do without help.

I was on a lake in a race course one time when I went turtle. Nobody saw me for about an hour in good weather. If you go completely turtle nobody will see you.

Mike Hill
H20 #791