: Good old eyeball, and a little established technique. Eyeball for the general
: shape (airplane airfoil, since I don't know what in the hell I'm doing
: around boats), and starting out with facets or chamfers for symmetry. Same
: as when you're fashioning a round spar, and start by making an octagon,
: then a 16-a-gon, 32-a-gon, etc. I can count up to octa, but then I'm lost.
: But I'll bet you know their real names.

: Cheers,
: Kurt
~~I have read od glassing the rudder for strength
~Scott