I have been reading up on how to finish pep work. From what I have read you resin the outside but my question has to do with the inside of pieces. My first question is what is the better choice on the inside, rondo or fiberglass? Is it easier to work with rondo? Is fiberglass that much stronger to make a difference? After resin coating the outside of your pep can you use the rondo on the outside also or just go with straight bondo?