Auto-hypnosis was successful for me to experiment with; but only in a quiet private place. I learned and taught the skill to some friends, but they never managed to put me under. Likewise, I never reacted properly to the "canvassing" at hypnosis shows, so for me; no.
In anycase, you cant hypnotize a one armed man to have two arms, and you cannot hypnotize an ASer to make use of neural connections that are not in his/her brain.