I stumbled upon something while at the paint store last week.
The general consensus in the Car Audio world that does fiber glassing uses a "Milkshake" (A mix of Bondo and Resin/appropriate hardeners).
It sounds like a royal pain in the ass, which Ive heard it is.
Well here is a cure:
http://www.evercoat.com/productDetail.aspx?pID=15
In short it thins out Bondo without affecting strength. So no more pin holes. Easier spreading.
This has to be the shit if ever there was a product thats the shit.
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