Hi, I like 1/2 oz F/G cloth and WBPU as it adds very little extra weight. Plus you can paint over it with any kind of paint. I have done a few jets this way because of the extra power I put in them and to keep them looking good. Here are a few pic's of my Jas-39, F-5e and F-16 these were all covered from nose to tail this way. The T-45 just has a coat of WBPU over the foam no glass on this one.
Keep em flying

raido56/ Herb