Yeah, but wasn't this supposed to be an expert?
I got revenge on the shark population once upon a time about 25 years ago. I spotted a blue in the surf where we were swimming - a wave picked him up and tossed him on the beach. I grabbed his tail and dragged him further up on the beach and beat him to death with a big piece of wood (flotsam) that I found nearby.
He wasn't that big - 6 foot 10 inches if memory serves - and he was obviously injured. But, I put him out of his misery anyway.
It beats clubbing baby seals.