Rather than let the dog lunge into the prong either keep just a tiny bit of slack in the leash or get a 9-12” loop tab. It’s what I’ve used for a long time. You can keep it just barely loose then just rattle the chain with a couple fingers or if you have to just keep pressure on it. I don’t like to do it that way myself, but sometimes really high drive dogs need it to settle their nerves down.
I think most trainers will teach you to hold the leash in your right hand and use your left for the control.
I put my left hand through the handle with it folded into a slip. Then I wear an open glove year around. Often a leather one. This will prevent you from ever dropping or getting the leash pulled out of your hand. Even if you fall down the leash will not come off. All of your correction is done with your left hand while your right is ready for instant reward.
Then I keep my treats or rewards in my right pocket or right hand.
I call this a close order heel. I found it works well on almost all dogs by preventing them from getting any momentum. You can correct faster and control pressure easier.
My Aussie had never had a leash on her when I got her. She really got really frantic at first as I didn’t have a prong. We got a cheap one at the pet store for a week or so until the Herm Sprenger came from Ray Allen. I use a quick release style. Just my preference. I’ve yet to see one come loose.
I only use it maybe once a week now just to keep her sharp.
Two of the training centers We go to don’t like this but I sometimes think they never really get to see the dogs in the,last 5% of the curve. The really, really high drive, nervy dogs. These guys can be a hand full if not guided properly. I don’t think I’ve ever seen dogs like we trained in Sch. in regular obedience classes.
I also add a “watch me” command in the heel training and other training. It’s good to do this in your home first as it will be invaluable distracting the dog from outside things that provoke him. By training this you can direct the frantic dog to you for good things like treats or other rewards and keep his mind off the bad distractions until he is ready.
If you can train this in your home you have a huge advantage. Get your basics done at home then go to training classes to,proof and fine tune your training with dogs that at least are under some control.
Tron GSD SCH III, AD, TD. Never to be forgotten buddy
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Samantha, Australian Shepherd, rescued , loves everyone