Dr. D…
rather than spending the time retrieving and putting on the helmet from the back deck, I would have simply retreated to find a safer passage where rocks are not a problem, i.e. deeper water. I don’t even think I would flip in that situation. I just think it sucks to work my way around rocks in shallow water with a long boat. If I wanted to do that, I would be in my ww boat on a river instead. 
sing
sing