You can use any # you want. A number is just a number, is just a number. The sail #’s identify the boat only for racing. You don’t need to try to identify the original #, unless you want to for sentimental reasons. Many racers have more than one sail and use different sails at different races. Yes the original #’s did run sequentially, and that would help identify the approximate age of the vessel, but it just doesn’t matter (again, except for sentimental reasons). So save money and go with a number that means something to you. The shorter the #, the less stickers you need to buy. The less stickers you need to buy, the cheaper. Have fun, and try racing, you’ll like it. I’d go with #123, people will remember you (of course, that may not beneficial either).<br><br>