First, even if I could do this, I don't think I'd want to employ such a method.
However, here's a new wrinkle in the discussion. A good friend of mine is a psychiatrist by trade. As part of his professional development, he did learn hypnosis and has found it to be an interesting tool, and uses it only ethically.
Here's the thing in terms of this discussion... He said it is completely impossible to use hypnosis to make someone do something they wouldn't normally be able to do. So in other words, he couldn't hypnotize me to rob a bank, because my values system wouldn't allow me to do it under normal circumstances, so therefore I could NOT be hypnotized to do such a thing.
SO.... in the context of this thread, if you WERE to use hypnosis to, say close a deal... then you know that you haven't forced your buyer into doing something they wouldn't normally do anyway.
Does this make it ethical? Heck if I know. In fact, I have to say that it may simply prove that you've used hypnosis to make someone make A purchase... does that mean that person would not have normally made THAT purpose.... or ANY purpose?
I've successfully managed to confuse myself... thanks!