I am looking at a 31 AC, probably within a year or so. I know there aren't a lot of 31s racing around here for the most part- mostly 28rs- but I want something a little more cruiser friendly for taking summer jaunts around the great lakes. I am interested (as is the wifey) in racing though. I take it if I racee against 28s then scoring goes according to DPN. I looked it up and have a question- when the rating says M+J then I take it that means no spin or reacher, right? If I raced with either then I would need to take a modification hit, right? Or if I did run a spin, etc, then would I take the 31OD rating? New to tris, and wondering. Thanks

F-28 Tri Stock M&J F-28 66.8 70.6 68.5 67.2 63.9
F-28R Tri All Sails F-28R 64.7 67.8 66.5 64.7 61.3
F-31 Tri Stock M&J F-31 65.7 72.0 67.4 66.1 66.2
F-31R Tri O.D. All Sails F-31R 61.9 65.4 63.8 62.5 59.9

Just calc the hit taking 31 M+J with spin and comes out to 63.07