it was the first real fiberglass project that i tried and i learned alot but the process seemed to work okay if you find you have trouble with the foam.
are you going to do an under section as well???? i've seen a few bikes with a tail like pictured above (with no undertail...just open body work) seems to me youd catch a lot of air under there....esp. when doing wheelies....def. bringing them back down, but possibly ripping the tail off eventually (worst case scenario)?
also...wut are you doing for a seat on that??