It is my experience, if you use Awlgrip, you should put a flattening agent in the mix as even with griptex, the glossy surface can be slippery when wet and it also cuts down on the glare. Awlcat #3 is the converter for brushing or rolling. If starting from scratch on old fiberglass, then the epoxy primer 545 (with converter) is also recommended before the finish coats.