Well rules are rules but some rules are never enforced.
Unfortunately it's all about the dollar with most sanctioning bodies. I could be way off, but I understand that if you play up and the team wins the tournament "Championship play" then your dd is now on that teams roster for that year.
BUT.......I asked Warren and his words were something like "Well.....We want as many girls playing as possible so we are not going to enforce that "rule" or something along those lines.
Basically it is a free for all so just try to follow the somewhat "rules" the best you can and go from there. ;&