all versions of "yardsticking" by back calculation of sailing performances between different classes of boats at different events over a period of time, has always proved to be fraught with "abnormalities" between the "handycaps" of various of the classes that are included within the system. There are also many occasions that these handycaps have been known to have been open to "manipulation" if certain sailors know which events results are to be used for the calculations. These types of systems are far from perfect and/or acurate, but they seem to be one of the best that we have been able to come up with, particularly for "off the beach" typr cats.