OK, I know we should dive with a buddy and if I don't, which is usual, I take care not to remotely approach my limits.
Unlocking your belt is very good advice but perhaps with some lateral thinking the idea could be taken a step further.
Consider that if a weight belt were to be jettisoned that its loss, in the case of a SWBO, would automatically operate a small lifejacket which would float you face up. The life 'jacket' would not need to be large as the natural bouyancy of the suit would serve for floatation.
I'm just thinking aloud but maybe an entrepreneur will see an opening here...
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 politically incorrect bigot...
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