RE: ?'s on German short hair training
Using a collar requires the dog being conditioned to the collar and the operator knowing how to use it, its not a tool used by a novice to save time. Trust me you can accomplish all you want without the use of the collar. The dog wants to please you just like a child, you just must be clear in what you want and teach through repetition. If things during a training session are going bad do not get mad and lose your cool just try to end the lesson on a positive note and save what you were trying to teach for another day. If the dog equates the collar to you and your training session and learning is no longer fun you can destroy the dog. Trust me leave the collars to the pro's.
Best of luck
BD