not sure about the X on the stern, I'll look for it.
It doers have a US sail # though.
There are no other tornados around here that I know of, so there are no tornado regattas. There are open regattas at the local level, I'll talk to the race chairman in the club about what will happen if I show up with the T.
I really just want to use it in distance races like the key largo steeplechase. Even if I can't compete, I'd just like to be there with everyone and have a good time sailing it.