I bumped something big last week when it was good. I was sitting on my board, bobbing in the lineup and the tail definitely hit something large... I didn't go in, but I did jump in to claim the next rideable wave and get down the beach a little! Besides there were plenty of options that day, especially once the kids got out of school and filled in.
One time, at bandde camp, I heard a thud and felt a bump on the bottom of me bourde when I ducked a wave. Felt aboot the size of a bluefish. So I said, "Hey Bluefish, go suck a cocque"