I remember that simulator at Helitech in 1989. I stood watching as some jack-the-lad climbed aboard desperate to show his mates how adept he was at tackling anything new. The salesman started it up and set it oscillating in pitch as well as yawing round and round. He told the encumbent to manipulate the controls as necessary to stabilise the craft.
Well, our trainee pilot soon demonstrated his expertise in failing to time his inputs so as to arrest the motion, instead making it more and more severe. When it started hitting the endstops, the salesman decided the job was done and switched it off.
He then asked me if I'd like a go. I climbed on board and he set it pitching and yawing as before. He was suitably impressed when I arrested all motion in a couple of seconds. I failed to let on that I'd started my ab initio heli training a few months before and had only just finally mastered hovering an R22.
I thought it was a useful tool to give students an idea of the response time of rotor systems, even though it had no movement in the roll axis. I've never seen one again.