Teach your kids how to learn how to compete by running contests through-out the week. 3-point shooting, Hot Shot Shooting, and relay races with dribbling, shooting and passing. Daily individual contest should be recorded and top 3 in each age group compete for a champion on the final day of camp with parents present. Make sure in your daily group contests you shuffle your teams so that over the course of the week every camper is a winner in some way. We usually gave away gift certificates donated by local businesses for discounts or free food or drinks.
Kids love that.
Do everything together. Whatever the size, rules go for everyone. Be on time, hustle between stations and games, encourage others, pay attention during instruction. Send problem kids home and refund their money, never let one or two ruin the experience of many. Don't reward them by sitting them down for 10 minutes and then letting them play.