Hatch repair question

[frayed_knot]

It's the cover over the in floor fuel tank. I googled marine grade plywood, and like you said Airslot, a good grade of exterior is just as good. I plan on doing the fix just like in the how to forum, with the exception of gel coat.

BTW- Air, I'm in New Bern, NC. All we have for the big box hardware stores is Lowes. I'll have to go check it out. Thanks for the info!