The Dobermann's neck has a design fault: the shape of the vertebrae make it more prone to neck injuries, and if you want to minimize the risk of that happening you want to avoid hard jerking pressure on the neck. If your Schutzhund club doesn't want to respect your wishes in this matter and is hung up on old school ways, it might be time to change clubs. My priority is my dog's health, because nobody is going to be paying the vet bills or living with the dog except me.
And good news: I've put down a deposit on a puppy, but I'll leave it as a surprise just as to where I'm getting her from for now. I will be meeting the breeder and picking her up from Warsaw at the end of December :-)