Are any sailing handicap ratings correct = NO. Will SIRS be the most accurate. That depends on the people who use it. The more people who use it bearing in mind that Sailwave is used all over the World then the more accurate it will be. As for swinging back and forth you are correct this can happen which is GOOD. If you were using it for a Summer series for instance then the ratings could be set from the 1st race and wouldn't necessarily be altered till the last race. During which period the ratings would have probably altered. You could then if happy with the Summer results stick with the same ratings or start the Autumn series with the latest ratings from SIRS. You wouldn't have to wait a year for an updated rating which is currently the case. Wouter I don't want to get embroiled in a discussion over something neither of us are likely to change. I respect your views in regard to formula based Ratings but please don't tell me that my personal feelings are wrong because I believe that SIRS has the capability to be one of the best rating systems known to Sailing.