Deep vs Shoal Draft Ratings
The Chesapeake Bay PHRF for my Deep Draft 28.5 , with folding prop and 155% Genoa and two other similar race rigged 28.5's have always been 174.Anything in the 180's is a pure gift, probably with a 6 second credit for a roller furler, and some boats have been given an 'old age' allowance in the past years, but not the 28.5. Similar boats such as a C&C29 have 180-184 ratings. The Pearson 30 rates 174 as do many Alberg 37's. A J 24 and S2 7.9 also might be 171-174, and Catalina 27'a are 219 -231. I saw only a Hunter 31 shoal draft on the list at 183 but no shoal draft 28.5's. The newer Hunters such as the 29.5 with smaller headsails rate 204, and a newer Hunter 28 with roller furling 110 was 198.Basicaly, the 28.5 deep draft with decent sails and folding prop sails to its rating because it points very well and sails very well in light air. When the wind is in the teens they all should sail to their ratings.If you want to win with a SD28.5, add at least a decent 150% Genoa, a folding prop and plan on spending some time fairing in the bottom for light air and down wind speed, whichwill also help you point somewhat better, but probably 5-10 degrees less than the race rigged 28.5's, hence the rating difference.