TCF do you charge kids to play in your group? I have succeeded in forming two groups (of 4) for my two kids a mini tennis academy. I would like to charge $100 each for the six other kids per day (at least three hours of tennis) but many times they are freebies. Some of the cost goes to new cases of balls, paying top HS kids and college players to hit with them. I have noticed when money is involved it takes the fun and motivation away. When there is no money involved it is just pickup whoever shows up but I still have to pay for expenses, how are you doing it?