I use the soft brush. Some people say a brush scratches the paint. However, it's kinda like brushing ones teeth, noone pushes the brush so hard the bristles bend over to lay flat. Same with using a brush on the RV, let the tips do the work instead of too much pressure.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"