Keel templates are available from ComputerKeels.  The templates are computer generated and are supplied in a set of  three cord length templates.  The cost for these templates are around $160.00 .   As important a clean bottom is having the proper foil shape improves speed and point while reducing drag. In some keel manufacturing techniques, the shape of the keel varies,
  distorts when the molten lead is poured into the fiberglass shell. IF your do a KEEL job, let us know the performance improvements.

I completed a rudder fairing job during 2002 summer sailing break, check out: Rudder Fairing It was a month long project, and I had the enjoyment of learning the process on a little rudder. Now I'm ready to to fair the keel. I would follow the same process.
10-10-02 Eric Roline