Sam and Johnny V-
thanks for the comments about my website...
Good luck with the rolling!
Thinner is better, that's for darn sure!
My paint is hard enough (White thinned about 30% until it was like nonfat milk). I think you don't really need test panels- I used my hood a took my time. It got a few more "practice coats" than the rest of the car but I figure it protects better that way against rock chips... Here is my ride after 1 year as my daily driver on a nice March afternoon in San Francisco...



Link to the White Comet Web Story...