Thanks for the info on your fiberglass woes.
I was pretty careful about keeping the trailer dry before I got the first layer of glass on it.
I did have a couple of small spots which it seems like the finish layer of luan delaminated from the substrate. I've ground them down and put another of glass over the spots.
So far I have 6oz glass over everything and just went out today and bought 25yds of 1708 biax cloth and another gallon of epoxy. The plan is to cover just the top of the camper with a thicker layer of glass to protect the top in case of a tree limb coming down on it. I hope to glass the top saturday morning and then sand and fair things out and get primer on monday.