Oh man, what I would give to live next door to a Hooters [X(] Hate the food, love the eye candy err I mean atmosphere

Now to get back on track here. I agree, there really is no need to fiberglass the center, BUT, since you are talking about turning it into a taildragger, one can assume you may be flying it harder than most do with a trainer. Fiberglassing will add weight, mainly do to the epoxy, but it will add strength, so if you plan on beating up on this plane pretty good then I'd say go for it, but if your goal is to fly the snot out of it doing standard training stuff and mild aerobatics then 30 minute epoxy on the center ribs and wing joiner will be plenty.