Thanks again for the info. Poly brushes ? I have to try that, isn't it too soft ? I found this 3M compound, is it the one you use ? it seems to be right one: http://solutions.3m.com/wps/portal/...E3E02LECIE20S4K7_nid=GS8YNNN9MLbe9NQK7NZ8TZgl In his article schrothfiberglass.com uses the 3M super heavy duty but I don't think I need that. He also uses Gel Gloss and I'm not too sure why this is used for.