Regardless of what you ride, number 1 rule should always be the fitness and ability to swim at least enough to get yourself out of trouble unassisted. If your relying on a goonie bag to save your arse you probably shouldn't be there in the first place
I would have thought people would have a pre conceived notion of what would happen to them if the inevitable happens in challenging conditions. Famous last words Oh i thought it would be alright to paddle into jaws at 40ft on my 9.2. same really