Remember Leo Fender's 1960s Stratocaster's? Check your local guitar guru about this topic as well:
Fact:
The two-part catalyzed coating named "Fullerplast" (Fuller for Fuller O'Brien, the products creator, and plast for the obvious PLASTIC"), solved all of Fenders finishing problems; encasing the deep wood pores in a self-hardening plastic that wrapped the body in a rock-hard solid coffin. In some cases we have found it to be as thick as a.060 string. Yes, all of the wood moisture and characteristics are sealed in a virtual time-capsule, only to be vented from the body through screw holes and paint fractures. Share this info and be the hit of your next guitar gathering!
Fred Bear used Fullerplast on his later bows, but it is a bear to remove and replace.
The doc says Birchwood & Casey tru oil gun stock finish is great stuff and works really good on wood and fiberglass both. Easy to apply, and easy to touch up. Thunderbird is a good Fullerplast alternative epoxy finish if you have the equipment raring to go.