Untitled.jpgI found this, what do you guys think?

Would 3/8 (.375) be enough? It looks like the original seat bases were .375 plywood, and when the vinyl guy did his scabbing he used 1/2.

Nothing structural in the bases, just needs to hold the skins on right?

A 24" x 48" sheet is $62 from Grainger, which I can have shipped to store (for free I think) and just pick up. My only concern is will this stuff take a staple?
I had some scrap TREX laying around my garage which I shot with my staple gun and a 5/16" staple just to see and that went right in....