Training a German shorthaired pointer to walk on a leash is very easy. Once he gets used to walking on a leash, it should become part of his daily routine. He should spend a few hours a day on a leash, just as you would walk him outside. It is advisable to do this in the morning or after dinner before going to bed. Ensure your dog understands how to walk on a leash while you are there and not to pull or bite.