Fuel Tank sub floor replacement

[EagleOCNJ]

I pulled my fuel tank - w/ you guys' help of course. The wood under the tank is rotted, the glass was still strong. But I cut it all out now have another few day, $$$ job. What is crazy to me that the plywood was not protected on the bottom - whats up with that.

Anyway I need some direction on this from type of wood, type of resin, alternative ideas to reinstall, etc. I cant find this in a search but I know its on here somewhere.

Can I get resin and cloth at Home Depot? Im in Southern NJ.

John