How do you register boats that have been rebuilt? The only part of my boat is that is original is one hull(the one without the ID number on it). New sails(most older boats have done this), replaced the 10' beams with 8.5' hence new tramp. Broke the mast so that has been replaced. One hull had problems and factory replaced that. I know many H16 sailors that have hulls with 2 different ID numbers. This is the case for many older catamarans. Even if I had titled it when I bought it the title would not match the boat.

But the worst part of this is having to put those UGLY stickers on some really nice looking boats.
And for you F18 sailors I'm sure there is some drag involved so you had better add this to the class rules.