OK, while I am waiting for my wood materials (for the ribs) to show up from Wicks, I went out and got a 3/4" thick piece of nice plywood to trace out the rudder. Worked until 11
opm last night and it looks great! My goal is to cut it out and, when I receive that associated tubing, bend it around the cutout to form the curved outer profile of the rudder.
NOTE: A friend of mine did the same thing but forgot to take into account the thickness of the tubing- he actually cut out the outer dimension, so that by the time he realized his error and had made his rudder, the radius is larger by one tubing width- so be careful!