There are very few used Nacra 5.0 or 500's for sale, but there are a some 5.2's. Since I haven't used daggerboards, I don't know what to expect. I realize the benefits of them, but are they difficult to use when sailing singlehanded? How do they effect tacking? I don't plan on any racing except maybe a few local regattas with area clubs for the fun and friendship.