Honestly, your doing the right thing there is no easy way around it unless you buy a canopy. Trust me, I live in Cathedral city, Ca. aka the desert. There is not many shaded area (1 every 3 miles) here and most of the trees are palms trees. I try very hard to get the cleaning thing done by first thing in the morning or early evening 5pm-7pm. Im constantly wetting my expy before, during, and after washing. When it time to dry I am again wetting my drying clothe. I figured if I went over the vehc. and remove majority of the water then quickly over it again always keeping my drying cloth pretty damp (to remove the water spots),every thing comes out pretty satisfying at the end. For me as long my drying clothe is mostly damp the vehc dries up pretty quick with a minium of water spots. :dj