I thought I posted on this already.... :dontknow:
Anywho.... I have used several "Spray-Wax" formulas. Some are decent, some are bad. ........... But, I always ONLY use spray-wax on a vehicle to "touch-up" a good FULL wax.
I use a product called Pennicle Crystal Shine on the Vette and my bike between waxes. It will give you a little extra depth before going to a show, or GTG. But, it has to have a good shine on it already.
The Vette gets waxed every 2 mos., even tho it never get's driven and stays inside (under cover) in a temp. controlled garage. ..... But, I used the spray-wax after EVERY wash. It helps get the water-spots off, and adds a little extra "something".