I think most would say don't try to fiberglass it. The plane has a lot of open bays that would require sheeting, and with the extra sheeting, fiberglass and paint, you'd probably end up making the plane heavier than it should be. I just finished building one of these, and have followed both of the current threads on it. You should check those out for some interesting info. I covered mine in monokote, but just finished recovering another plane in ultracote and will be using ultracote in the future.