Instead of washing, drying then applying spray wax to 1 section clay it then wipe off excess spray wax. Scrub the car with a good car soap cleaning the wash mitt after every panel so sand and grit dont get in there. After washing dont dry respray car w/ water so it stays moist then soap up 1 panel and use the clay on that panel using the soap as your lube then rinse and continue to the next panel that way you dont have to wipe off the mess and possibly scratch the car. Does the same job if not better in half the time.

 

I do the same thing sometimes.. works great!