Byro
Lurkin’
The plastic would be superior for sure. Even if it cracks it’s be easy to fix.
You have to have some kind of backer for it. A SxS belly has all kinds of webbing in it, biggest span is maybe 10”x10”
I run 1/2” for my boat sides and my biggest span is 12”x12” It’s deformed a little in a few spots. I’d say the spread on the Tracker frame is way too wide even for 1/2”. I’d worry that it would deform so much that it’s try and pull out of the mounting bolts.