I firmly believe that any and every dog can be taught loose-lead with a simple flat-buckle. The problem is that most people jump ahead of themselves. Before your dog learns to walk nicely outdoors, he has to do it well at home. It's like training Sit. Before your dog can do it in your front yard, he has to learn how to do it in your living room, in your bathroom, in your backyard, and, eventually, you add in distractions. The dog has to learn that there's only one way to walk. In order to teach that, you have to start from the very very very basics. Be consistent, be firm, and be patient. How about exercise Fender a bit before you go on walks so that he's not so amped up? Then, go through your loose-leash routine in your backyard. Work your way up to your front yard. Do some figure 8's down the street, and then go for your walk. Even if you don't make it past the neighbor's house, at least Fender will start to "click" with the idea. Good luck! It can be very hard at first, but the rewards are well worth it!
I dont agree at all, I tried consistantly for many many YEARS to to train her this way, I now have a dog that walks fantastic anywhere on our block lol I cannot walk a border collie around the block a few times and expect her to be tired. she will be 5 years old this year, thats 5 YEARS it took to get her to walk nice on my block only. it got to the point that I simply could not exersize her she yanked so hard, pressure and pinch type collars were usless, she simpley didnt care. I tryed the Halti, it worked, at first I used it all the time, then I would start to fade it(putting it on, but hooking the leash to flat collar etc.. until I didnt have to use it at all. does she still pull? yup. but now she listens, and a voice reminder alone will stop her pulling.

yes I put the haltie on for a scrawny 11 year old girl to walk her, when she gets exited she still pulls, I can stop her with a voice command, but I have no reason to belive she will listen 100% to a stranger, and I am NOT willing to test it.