Don't Give the 'Kid' a Gun
Just as we would never vote for our government to pass a law that would allow our children to carry a gun or go to war, we would all fight in defense of our children not being drafted even at the age of eighteen.. Allowing a young Dobe to be trained in aggression is an assault to the dog who is not yet a mature, well-mannered adult.
Do not destroy your chances of enjoying a great Dobe because a self proclaimed dog training behaviorist encouraged you to begin aggressive enhancement training.
Work toward the single goal of excellence, period. Our recommendation is to wait until a Dobe is eighteen months before considering protection work and while you wait, educate. Then send the 'kid' off to Camp Hoytt to learn defense as a skill.
Let's keep the guns out of the kid's hands; but know that we cater to a more refined educated clientele who seeks more of the great companion then the "PIT" winner.