Thanks, Bruce!
I always sailed with my I-17 boards up at least 8", because it just seemed that if the board was long enough for the I-20, it must be too long for the I-17. Whether in light air or heavy, the other I-17s did no better than I did and they all had their boards all the way down. I think Performance knows that they don't need the boards that long for the I-17, but tooling cost for different boards for the I-17 and the I-20 doesn't make any sense to them, and since they are one-design, they are not optimizing the I-17.