I do a semi-WIWO approach. On a cotton towel, I place a nickel-sized blob of SG. I then use that for the hood, wiping it on until it is basically imperceivable except for some hazing here and there. For each panel of the car, I add an extra dime-sized blob on the towel, and again wipe it on until it's basically imperceivable except for some hazing. I then let dry for 15-20 minutes, and proceed to use an MF towel to wipe off the hazed areas. Using this approach has not let me down, as SG is easy to apply, and I know it's on there, too, as rain just sheets right off. In fact, I can drive on the highway in the rain, let the car sit in the garage, and the next morning the car is basically completely clean except for a little dirt on the lower part of the car, and on the back of the car (it's an SUV, so the back always gets dirty).
