Thanks Steve! So far, the consensus is ~ 60" for the pole, 1" diameter. I'm going with the Forespar dinghy spinnaker kit and will cut to size. It comes with Mini 6 end fittings and is reasonably priced.
Thanks for the tip on the centerboard. I have seen references to "the centerboard mod" but hadn't quite figured out what that is yet.
Can't wait to sail it - we get plenty of light wind here. Sell it to someone in Sandpoint so we can start a fleet.