Just wanted to give a high rating to Wash Wax All. I finally took the plunge recently. It is not cheap , but, to my mind, worth the cost. Using the mop I did the rig in about the same time as washing ...
I just did my rig this AM with Wash Wax All. We are in Newport, OR and several folks have commented on how great the coach looks. When we were in an RV park in Eugene, my camping neighbors wanted to know what I was using to make the coach look so great.
I don't think the liquid stuff works any better than some of the other dry wash stuff on the market (Dri Wash, No Wet, etc.) but the entire system with the mop is what makes it easy to use.