Ok thank you Don, I completely understand this now. How about using Fuzor instead of glass matt? We use Fuzor at the shop all the time and man that stuff is STRONG! I know a lot of people are using it now to weld panels together (or fuzor them together instead of weld)... Either way, I now know exactly what your saying. What size plywood should I use if I do this? Only thing I would worry about is rotting of the wood later but then again it won't be out in the rain much with no top. lol