Our 37 is rated 153 by PHRF of the Chesapeake. We have a shoal draft, fixed prop and RF main. The breakdown is 132 base rating, +6 for fractional rig (even though they all are), +6 for RF headsail, and +9 for the prop. In our first 6 races it seems to me like the boat could sail to its rating in winds over 11 or so, but it's tough to keep up under 7 (most evening races around here). Good luck.