Some of the dings will need filling. I was thinking of making my own bog by thickening gelcoat with cab o sil. The rationale: easy sanding, relatively water proof, the color will be easier to cover.
Thoughts?
cabosil (fumed silica) does not sand easily! use microballoons (preferably phenolic but glass microballoons will work).
Or...easier...use premium bondo (black/gold can with blue hardener...I think the can says "professional" or "premium"). I use bondo with good results under gelcoat. It has a polyester resin base.
