Ugh man them things are death traps. My dad had one, sold it in 1994. There was a lake north of Terre Haute that we used to take it on, was great if the thing didnt hit something or bog down, but if it stopped moving, it would literally start slowly sinking in the water. It’s almost like the buoyancy was just enough to float if no one was in it. But loaded, it’d sink fast if it stopped moving.