OK I think I know the diff. My anchor locker w/ door does not have a shelf/floor it drops right into the ice/beer/fish/storage box.Mine would always fill up.The problem was that the spray would come thru the rub rail.&rain thru the deck lid.When spray hits the rub rail it is with Force.Any small crack can let a lot of water in.I sealed my top deck to hull then the rub rail to the hull underneath .This way I have 2 barriers to pass.The rub rail to hull is the tricky one to do.It allows the water to spray out instead of between or under.Just used a white silicone for this.cut aa thick long angle on the tube.5200/4200 runs to bad.
Any pull/pop ups on Your boat ?lights? maybe reseal all fittings. I hate water leaks & have fixed most all of Mine. I have very lil' water now.
Scream'n Reels'
