That's the problem, I know the technique that you describe, but it has little effect on my dog. I have even tried a modified version of the technique where you turn around and go the opposite direction when they pull. After a year of attempts, including a leash class (which mainly taught the techniques we knew) we have been trying the Gentle Leader harness. He hates it with a passion, yet he still pulls. The only time he doesn't pull is when we are walking an area we have just been through. Therefore we try not to walk him on a loop route anymore, but instead walk to point B and back to point A the same route. After 2 hours at the dog park today where he played and wrestled with about a dozen other dogs he was still pulling on the way back to the vehicle. To say he is an enthusiastic dog would be the understatement of the year.

We got him from a rescue when he was about 5 mos. old. He lived with a pack of about 20 dogs and had very little to no individual training. He has learned almost eveything I would ask of a dog, but how to heel. I'm just hoping his energy level will diminish as he leaves the puppy stage.

Re: pulling on the bike. My dog is extremely muscular. I'm not boasting, he just is. The vets comment every time he goes in. They have a hard time examining his belly because they can't feel his innards through the abdominal muscles. I would definitely want to try a springer before I paid for one because I am not sure he wouldn't be able to pull bike and rider over to the side, even with a low center of gravity.

Thanks for the advice.