Nah, I’d have better seats than that.
http://en.wikipedia.org/wiki/Independent_Women%27s_Football_League
http://en.wikipedia.org/wiki/Women%27s_Football_Alliance
IIRC, they have approached 10K in attendance at championship games.
So there are two leagues out there with over 100 teams with one being around for over ten years, and I’ve never heard of them until now. OK, point taken.
I’m not sure where 10k at a championship game gets you. You’ve got ~5,000 people involved in playing, coaching, managing with 100 teams, so it might just be a friends and family event.
For perspective, many high school stadiums seat more than 10k and the record attendance for a high school football game is about 51k.