[Blue_Runner]

I would think either that boat was a sinker or someone let it fill up with water for a couple of years on the trailer for the whole floor to be solf :-/

I've seen a few V21's here and there and never have I seen a rectangle or square hatch in the rear deck. A round inspection plate seems to be the default, yes. Now there is some wasted space in that area between the fuel tank and inspection plate. I would never do it, but a fellow could make the area accessible with a deck hatch. I don't want to introduce any more opportunities for water.