Has anyone figured out a solution to water spots after a trip to the lake? My 2250gcw is midnight black, which is beautiful when clean, but water spotting is horrible. I keep it waxed and have found that a mixture of about 60% water with 40% vinegar works good to remove the spots after the fact. However, I was wandering if there was something I could use to minimize the spotting as a pre treatment. I thought about 303, but it does not state that you can apply to painted services. The 303 company also offers a "shower guard" product to protect showers from spotting and mineral build up, but again, does not state it can be used on paint. Any help will be greatly appreciated.