I probably won't be there, but I built my own emergency rudder for the 2008 race. A large part of the job is shaping the foam for the rudder core.
and so...proceed to the following link.
http://www.flyingfoam.com/QuickOrderDetails.html
Look for the symmetrical foils on that page and remember, "thick is good". Their product is not expensive, it will make a dandy core as long as you lay on a good strong outer layer of glass, or go with carbon, and it will save you *hours* of time. They now offer tapered sections, which they didn't have two years ago. Heck, I might use this for the actual rudder on my new boat.
PS: you *must* use epoxy for the cores. Polyester resins will melt the foam.
Last edited by AlanH; 11-10-2009 at 03:50 PM.
1968 Selmer Series 9 B-flat and A clarinets
1962 Buesher "Aristocrat" tenor saxophone
Piper One Design 24, Hull #35; "Alpha"