Texan my problem with limited curveball instruction is you can monitor it at practice but you cant monitor it any other time. Kids like to experiment and they will if they think its ok. Once you introduce it they will throw it warming up and playing around with the boys. I feel that you have to get them to buy into the fact that it is bad for them untill they mature enough. You basically have to scare the he** out of them in order to keep them from experimenting with it. Thats not to say that Im coming down on you for your way of doing things. Its just the way I feel. I do not and will not be the reason a kid does not reach his full potential. I want to be a reason that he does.