RE: Fiberglassing a Byron Hellcat
As for the glassing, you may want to consider using the waterbase polyurethane method.
The advantages are:
A noticeable weight saving compared to a resin job (average is 3 - 4 oz on a 60 size bird).
MUCH easier to sand.
No concerns about if the poly is going to "attack" the foam (this may be a concern
using resin - the wrong type will attack the foam)
Accepts finishes just as well as a resin job.
No odor/fumes
Soap and water clean up
Disadvantages:
Only about 60% of the strength of a resin job (if you need the fiberglass for strength
you need to make your structure stronger)
Has about 1/2 the dent resistance of a resin job.
Hope this helps