He'll be sure to follow when you've got him by the balls!
The leather parachute ball stretcher snaps on easily, allowing you to hang weights from it, or hook on a leash. With the leash hooked up he'll really feel it when you give him a hard tug. You likely won't have to pull a second time to get compliance. After you've used this for a while you might wonder why you every bothered with a collar around his neck.