There are many tools out there to help aid you in teaching a heel or loose leash walking.

There is no need for pack mentality/dominance theory nonsense. Just train your dog!

http://www.freewebs.com/positiveposs...ingcollars.htm lists several different training collars that can be used to correct pulling the leash, though not the exact methods in how to use these tools step by step.

It may be time to apply the use of one of these tools for a temporary time to get the pulling under control so that you can work to correct and reward good behavior!

Of course, always try the least coercive method and tool first. I'd give the turning about technique another try with the wonderful advice already explained. Have you ever taken your dog to classes? If that does not work, I'm sure there will be many members here ready to give you more options and advice!