Hogan, Freedom had a hard top on it, and one thing that p.o.'d me was that the bottom was a rough glass kind of finish. It was painted over and looked fine. However, mold and mildew set up in it and it was a bear to clean unless it was sprayed with bleach. That requires pulling down the gels because the bleach will ruin them. I think I would go for a smooth finish. Perhaps a white lexan or other durable translucent product.