[blt2ski]

TOT in PHRF has THREE, yes three wind speed factors, which will change the 1 or zero boat if you will. In the 0-7 mph the 1 boat is around 140-150 IIRC, I figured this all out using a rating computer program once. 8-15mph is about 80-90 or so, then 15+ is around 20-40, with TOD being a 0 rated boat. BUT, as I am reading etc, when phrf started out, no one thought any one would ever have a rating less than 0. Yet locally a number of the sleds, ie a TP52, Santa Cruz70's that would be in the -50 to -100 range. Or Bob Perry's Icon is in the same area of phrf ratings too.

Marty