Format will be:
3 and under will be combined with another group
4-5 teams - double round robin, games 1 to 15, win by 2
6 teams - single round robin, matches 2/3 to 11, win by 2
7-9 teams - single round robin, matches 1 to 15, win by 2
10-11 teams - single round robin, matches 1 to 11, win by 2
12+ - 2 pools - games 1 to 11, win by 2. All teams advance to single elimination playoff. Playoffs games are 1 to 15, win by 2.