I remember seeing videos as a kid warning of the dangers of the boils below the turbine discharges. It showed a mannikin in a small jon boat (like the one in the OP) in the boils. It would start to spin slowly then faster until it was sucked down like someone flushed a toilet. That video stuck with me because both of my grandfathers as well as my Dad worked on dams all up and down the valley. My Dad lost 2 friends on Smithland Dam's construction when their tug capsised. One of them was never found , the other one's skull was dredged up 10+ years later from the Ohio.

If folks want to put themselves in harm's way like those 2 mental midgets, that should be their right. In return, they should have no right to expect anyone else to put their butt on the line to save them if SHTF.