Allegedly...

A Scottish rafting company recently made a big splash by accidentally
running two rafts, complete with punters, over the right hand side of
Eas a' Chathaidh on The Orchy in fairly high water. This was probably
not their finest hour. Carnage ensued though, thankfully, no one was
seriously hurt.

Anyway, anecdotal evidence suggests that all the punters subbed through
the towback and popped up some way downstream while the two raft guides
both took a bit of a working in the hole. It has been suggested that
this was down to the punters wearing wet wetsuits and the guides
wearing drysuits, a drysuit having a reasonable degree of bouyancy even
if well 'bled'.

On the original subject: no, i don't think I'd ever take my BA off if
stuck in a hole.