Hi Todd,
The 25 minute winning margin in the 2003 Steeplechase Race that I am talking about is in "elapsed time" boat to boat. This has nothing to do with PNs. The PN for the SC20TR today is incorrect in the US Sailing PN tables. Darline Hobock and I have an on going discussion about this. Present bookkeeping rules allow boats to get slower with time if that is what the recent data indicates. In the case of the SC20TRs I think it is old overweight boats and old sails and old sailors. I think the DPN without spinnaker should be 62 and add the spinnaker at a 0.96 factor and the adjusted DPN becomes 59.5. Today the DPN in US Sailing tables is 64.4 and adjusted for spinnaker becomes 61.8.
Bill