I have a three month old male GSP and I know several people that have them as well. What I was wondering was at what age is it appropriate to start using a shock collar? Some have told me to start now, others say wait til he's at least a year. I was wondering if there are any trainers out there with advice. I just would like to use it for huntin as need based (such as taking off on deer or turkey as he has already tried to do on his check cord). If anyone with experience could give me help I'd really appreciate.