Dale thanks for the info.
I certianly hope I don't have to do that again, even with the new cleaner ideas. I got all "House windows" and just have to do the windshield, which doesn't seem to be quite as bad. The Curb side windows were far worse.
I am hoping the RainX and regular cleaning keeps them away.
I must say, even though I am tooting my own horn, the coach has much more "curb appeal" with clean windows!