Her German Shepherd Dog Has Become "Collar-Smart"

Will wrote to me about his dog, Lexi, and said:
"Hello Adam. I have purchased your book and DVD set, and my 14 month-old shepherd Lexi and I have made great strides.
We started agility training at six months and thanks to the long line training, she no longer takes 1 or 2 obstacles and takes off running. We also are involved in training for show obedience.
Now here's my question that I need serious help with. I use the pinch collar during training as I should and she responds incredibly. The problem I have is when we are in the ring and she's wearing AKC standard collar, it's a whole different story, like we've never trained. She won't heel the way she does on collar (she lags behind) and on the handler recall she will usually blow past me. And obviously View the rest of this article