Wow! 5 feet longer on the luff than either "stock" spinnaker for the 20. I knew I-20s had taller masts. It's interesting to see that the foot is the same length as the Tiger/F-18 sail.
I'm guessing this would put my halyard a little further up the comptip than I should go, I'm not sure a reasonably longer pole would get me in the right range...