i had really good results with the sense-ible harness. it's one that attaches in the front and turns the dog around if she pulls.
the only thing is, it chafed my dog under her legs, so i stopped using it.
but she still walks well with a flat collar! go figure! she was a huge puller before. when she does pull now (doesn't happen often), i do just stop and she's learned that that means go a few steps backwards and then she can go forward again.
regarding pinch/prong collars, they are less dangerous than choke chains or slip collars, but there's just no reason to correct your dog that way. you are hurting them, that's why it works.
speaking of pat miller, this is her take on prong collars:
Myth #9:
The prong collar works by mimicking a mother dog’s teeth and her corrections.
It’s a little daunting to think that people actually believe this. It would be silly if it
weren’t so potentially damaging to the relationship, and potentially dangerous as
well. The prong collar works because the prongs pressing into the dog’s neck are
uncomfortable at best, painful at worst. Because dogs will work to avoid pain and
discomfort, the prong collar does work to stop a dog from pulling on the leash, and
can shut down other undesirable behaviors as well, at least temporarily. However,
like all training tools and techniques that are based on pain and intimidation, there
is a significant risk of unintended consequences.
In the case of the prong collar, the primary risk is that the dog will associate the
pain with something in his environment at the time he feels it, and this can lead to
aggression toward the mistakenly identified cause. A dog’s unmannerly, “I want
to greet you” lunge toward another dog or person can turn into, “I want to eat you,”
if he decides that the object of his attentions is hurting him."
some more info on dog training from pat miller:
http://www.urbananimal.net/pdf/issue...ythbusting.pdf