I used this on a 2005 31 foot fiberglass rig. The results were amazing! (Pro Tip: When your arm feels like it is going to fall off, you are half way done! Get a buffer!)
Optimum No Rinse Wash and Wax – 32 oz., Rinseless Car Wash and Wax in One System, ONR Formulated with Carnauba Wax with UV Protection, Use as Car Wax, RV Wax, Airplane Wax, Boat Wax, Motorcycle Wax