I noticed in the IWCA rules, it talks about assigning and tracking SAIL numbers, but none of the boats in any of the event photos use them. Only hull numbers seem to be used. I know for traveling series races, often hull numbers are assigned on site, which may differ from sail numbers for that event; but it seems like there has been a switch from sail to permanent hull numbers in the class. My sailing club uses sail numbers based on each boat's VIN, so I put them on mine, but how come no one else does?

Also, it seems like there is a real dis-advantage to using stock Hobie sails in these Wave regattas. I understand a custom sail still has to conform to Hobie measurements, but they seem to offer more of an advantage on the water than one-design racing should allow. At the events I've been in, we joked about the segration throw-back: "whites" in front, "coloreds" in back. It's probably more a matter of the sailing skills of the people who care enough to buy custom sails; but it makes me wonder, does it make an unfair difference?