Is anyone familiar with the martingale collars?it's similar to a prong collar but without the spicks. It's supposed to be safer on dogs than a regular flat collar because it distributes the pressure around the neck for a dog that likes to pull. K have a pretty strong puller. I've tried harnesses but they seem to encourage the pulling more. The front clip harness are a pain since he keeps walking over the leash and still pulls some. He seems to walk best on regular collars but occasionally he will pull extremely hard. I really don't want him to hurt himself from the pulling. This is where I have looked I to the martingale collar. I'm not looking I to yanking him with it but, more of teaching him better loose leash walking