They seem to be the most apt to get in your boat when you are at what I would call a fast idle. About 5-8 mph they get rowdy.

Had one jump in the boat while hunting backwater this year. bounced off my passenger and ended up on the batteries in the bilge area. He popped the terminals of the searchlight i was using off and left us in the dark. It was the first time the guy I was hunting with had experienced them and freaked him out.

I always forget about them until the first start jumping. One of them baseball bats with barbed wire wrapped on it would be fitting for them.