Our active Taipan 4.9 sailer races one-up uni with spin. he's good, but so are others in the Fleet. He's been talking to us about the single F16 rating all year. I told him we'd stick to the proper rating unless otherwise noted by the class. After the Spring and Summer races, he asked point blank to be scored with the single rating for Frostbite. So far, that actually seems to be working out fairly. The boat is fast in that configuration...