I have an 18 week old shepherd and a 12 week old shepherd I was frustrated with the leash thing too, however a local trainer advosed me to get a slip collar (made of the same material as their collars not a chain) and use this while walking to correct the pulling. I do have to say it works. I do not pull to correct their pull is all it takes for them to back off (at first they would sit automatically each time). It seems to be a much gentler approach to correction. Hope this helps you!