On the advice of other RV'ers, I went to Wally-World and bought the Mr. Clean washing kit. It comes with a three way nozzle, soap, and filter. One position on the nozzle is for wet down, another for soap down, and a third for final rinse. (twist selectable) After wetting and soaping, I use a microfiber cloth on a long tool (also purchased at WalMart) and wipe the area with it, then using the wet down nozzle I rinse it off. Then switch to the final rinse which goes through their filter. I do an area at a time, and when I'm finished I just walk away. Occasionally there will be a water line from a window area that I use Turtle Wax ICE on, or just a microfiber cloth. Mr. Clean leaves no spots after the final rinse. The sell soap refills and filters at WalMart. I use less than 1 filter per wash of the MH. My coach still looks shinny new.
Wayne MSGT USMC (Ret) & Earlene (CinCHouse)
2008 Winnebago Destination 39W
It is what it is, and then it is what you make of it.