2015 Newmar Class A 38'. I usually start my trips with a clean coach exterior which I do myself at home. Then, more often then not, it rains in transit and the coach is dirty upon arrival. When checking in at campgrounds and/or going to my campground site I see many coaches that are spotless. How do you all keep your coaches looking so nice. Do you use the truck washes at truck stops or are you just blessed and never get rained on? If you use the truck washes are they effective?