Agree with above by Marq. I didn't wait long enough between coats, thought hot Fla sun would compensate, but at the 4th coat started to have problems, especially on hood, top and trunk (sides weren't too bad), even noticeable rollermarks. Going to sand and redo, taking more time.

As far as foam brush, I had to dab or stab tight spots with the point of it, couldn't really use as a brush. Surprisingly, those are some of the better looking spots on my car.