First I want to thank those who responded to my quest for info on JAM handicapping in a mixed JAM and spin fleet.I'm trying to get a handle on what the real differences are between boats using a chute and JAM. To do that I need the polars for different boats. I have them for the C&C 110 and J105.Based on Marchaj data, the beat speed is about equal to the speed of the boat on a reciprocal course. Using that and the polars for the reciprocal course, I calc'd the difference between chute and JAM. Surprisingly the Marchaj claim doesn't seem to apply to the J24 or J29.However, it would be nice to calc for some of the older boats as well.Does anyone have polars for the C&C 30, 35 (mk 1 or 2 preferred but mk 3 also acceptable) and the 25?If so, could you send them to me for calc purposes?ThanksRon Wild CheriC&C 30STL
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