Tri-tronics has a good product. However, yes, you are going too fast if you use the collar to shock. Use it to reinforce, but never to teach. Personally, I would concentrate on obedience up close - yes to a controlled setting. You can't have an obedient dog at 100 yards if you don't have one at 15. A lot of people move to quickly, skipping the basics. (This is the voice of experience, by the way.)
NAVDA would be the organization I'd suggest. North American Versatile Dog Association. Their focus is on the versatile European breeds, but teaching control to a pointing dog is the same regardless. Dr. Ed Bailey is or was one of their gurus. He's an animal behaviorist in Canada, writes a column in Gun Dog magazine. He responds to email, too.
Hope this helps! Take you time, do the basics, go gently.
You can use the tone in an attempt do interrupt bad behavior without doing any harm, but if it fails you gain nothing and if it works it might not ever work again. Better to train the response you want.
Good luck!
