I am finishing the install on the hydrotuf this weekend but I also want to make as watertight as possible the one rear pod I emptied of flotation and turned into my storage area and electronic panel location. I am asking for suggestions on what product to use to seal the pod where it meets the floor and under the ribs to prevent or minimize water entry. Thank you!

weld it or 5200 would work.

much obliged, I can't afford a welding job, but I can certainly afford a few tubes of the 5200.