Everyone has their own way of washing a bike. I just use a hose and a soft brush, and have never had any problems with water intrusion. I went out on a ride, last night, in a place I won't go again for a while. It's been four years since I last went that way because a new expressway is still under construction. Sidewalks are torn up, and I ended up riding through a lot of soft sand and broken concrete. I don't deliberately ride through stuff like that but I had no choice. Only a couple of miles of that stuff but the bike got filthed up. So out came the hose and a brush and it was clean in five minutes. The Florida heat will dry it off very quickly.