: Ditto what Etienne said- that's a sweet looking hull. As for your
: issue, it definitely looks like resin starvation to me. The
: reason it didn't show up before may be that after the hull had
: some flex and stress put on it the fibers moved around (in a
: microscopic sense of the term) causing separation from the fiber
: and the resin, which makes the fibers show up. You can try
: sanding with very fine grit until you expose the fibers, and
: then recoat. Sometimes it works, sometimes it sort-of works, and
: sometimes it doesn't work so well. It all depends on how deep
: the resin starvation goes.

Take a blow dryer and heat a small area to check that the discoloration isn't from water penetration into the epoxy. If the discoloration persists, them maybe Et and Malcolm are right. I always use a squeegee for laying out glass and have not had this problem. That said, once I lay out the glass, I do my fill coats every 6-hrs until I am done. I remember other folks having this problem and it was just a humidity issue...a light heat gun application cured the problem. Hope this helps.

Robert N Pruden