There is no need to select an arbitrary month. Make it the first of each month. .[/quote]

Huh? Instead of having a tourney bracket for kids born in 2009, you would have separate tourney brackets for kids born in Jan 2009, Feb 2009, March 2009 . . . ?

Sorry if I'm being dense, but I'm not following.

I think getting kids to play kids born in a 12 month window is fine, whatever the 12 month window is. Some kids will be a little disadvantaged (i.e. 12/31 birthdays) but less disadvantaged than the kids playing kids 18-24 months older than them today.