On Mon, 29 Dec 2003 03:58:11 +0000, William R. Watt wrote:

I watched a video on boat repair recently in which polyester and gelcoat were
used to repair a crack in a polyester boat below the waterline. The inside of
the hull was sanded down and 2 layers of mat applied. Then the finish on the
outside was sanded, then some putty filler followed by gelcoat were put on with
lots of sanding with different grits at each stage.


Yup - that's the way I was taught.

Lloyd