Answer by Barry Cooper:
You'll probably get as many different answers to this as there are hypnotists and hypnotherapists to give them but my personal take is that the stage hypnosis "state" is quite different to that used by most hypnotherapists, with the probable exception of those also trained in stage hypnosis. I'm not, and I only generally work with clients in a deeply relaxed state.
It's well-established (by researchers such as Hilgard) that relaxation is not necessary for hypnotic trance. My feeling is that "trance" covers a number of "states" which are quite different from each other.