Can I give you my 2 cents?
When we had Roxey in obedience, I bought a prong collar. Needless to say, as soon as it went on, she never pulled (guess she knew what would happen if she did:eek: ). She was the best mannered dog in the world. But just as soon as it was taken off....BOOM! She was her old self again:rolleyes:
Of course I liked the way she listened and acted when it was on her, but it was only when she had it on that she acted so perfect!
I guess you could buy one & try it, it would probably be the same for Nebo too, but I agree totally with Candy. You have to condition their behavior.
One of the things our teacher taught us was touch. Do you do that in school with Nebo? We would walk around the ring, let your dog get interested in something (another dog, toys, treats or whatever), then touch them on the behind & call their name, and back up quickly. Then act really excited (like what you had was the best thing in the world-so much better than what they were looking at). It really worked for us.
Just a thought for you Amy. Hope you find something that works for Nebo:D