Nick's book suggests that the OUTSIDES of the Deck and Hull be fiber glassed first. I have old epoxy and hardener and would prefer to do the insides of the deck and hull first. I am concerned that the epoxy may not harden completely, etc. due to its age. I would rather mess up on the inside where it would not show verses the outside. Then if I have problems with the old epoxy/hardener I can buy new for the outside application. Suggestions, comments?