RE: Glass work
i dont think theres much you can do after its already cured. but maybe if you apply a very thin layer of very highstrength epoxy (mix it EXACTLY or it will be gel) and brush it over that might stiffen it up. however the flexable epoxy has already hardened inside the fibers and theres nothing you can do to make the fiberglass itsels stiffer. (or maybe thros a strip of CF over it?) dont no how close you are on weight.