I use a product called Wet Paint. All I ever do is just wipe the heavy dust off with a Calif. Car duster and then put the Wet Paint on and wipe it off immediately. I also use it on the windshields and bugs just slide off with the swipe of a damp cloth. I have never used soap of any kind on any of my cars, but then mine aren't show cars either. The Wet Paint leaves a very slick and high shine. I can do a whole car with it in about 25 minutes and the Cobra was less as it was smaller.
http://wetpaintglaze.com/index.html
Ron
