I have had 10's the last 2 years and making the jump to 12U this year. I want 11. I always bat everyone with free defensive substitution, every chance I get. Has it cost me? maybe. I will always gamble taking an out for a player due to an in-game injury, than keeping someone on the bench. These kids don't develop their skills sitting on their cans next to me in the dugout, they need to be on the field. I also have a friend that has a 2nd year 14U team and he has always "ended-up" with 10. Tries for 11 but for whatever reason, the established team and the 11th never seem to fit. He is considering 10 due to that and he playes a serious schedule, so maybe it's not all about the manager, but about the team too.