Judging by the pic's that plexi windshield is Very thin, possibly 1/8 or 3/16 thickness, and maybe lexan. It surprizes me how tough lexan is, to not with-stand weather any better than it does, it scratches easily and you can not polish out the scratches like arcrylic. Arcrylic has been on boat for a lot of years, and as long as it is taken care of properly lasts for Years. I've used 1/4 arcrylic in one these boats, but because of the length and width, the 1/4 seemed flimsy to me, after that I went to 3/8 material and it's much better, but much harder to form with-out imperfections, I think the 3/8 thickness is going to be just fine, once we learn how to form it with clarity. just my opinion.
