Mary, sshhhhh. ISAF might hear you. You can't say n-a-t-i-o-n-a-l-s!
If you want to call it the US Plastic Goblet F16 Championship it'd be OK though. Oh, and no, I don't think you'd be required to have a minimum number of boats to call it a Not-The-US-F16-Nationals...

So why not do it anyway if you think that's going to be the largest concentration of F16s this year? Not very fair on those F16s who didn't know that it was going to be the Non-Nationals.