Suggestions for sagging floor gas tank access panel - Seafari 20’

[Old'sCool]

"After the wood is epoxied to the cover and before you seal the plywood, bore 1/2" to 5/8" holes in the new wood only, then fill with epoxy/cabosil and you won't have to drill through the wood, just through the new fiberglass plugs. I know it's overkill, but not hard to do."

This is what I have done on all that could be done. The West 610 (I think) with the mixing nozzle is too easy.