We have gel coat on our White Hawk and, although we've used it only one season, I have washed it several times with Camco RV wash, and have waxed it with Meguiar's cleaner wax, using an orbital buffer. I use a small step ladder and can reach everything but the very top of the front. In between 2 wax jobs last season, I touched it up with Meguiar's Quick Detailer spray. And I cleaned the roof with Spic n Span before last winter. Fortunately, I actually enjoy cleaning the TT and TV, so it's not really a chore.
2014 White Hawk Summit Edition 27DSRL
2013 Ford F150 Lariat SuperCrew EcoBoost
Blue Ox Sway Pro BXW1000