No matter how many instructionals i see on this, i can not figure out how it works. I have even asked the instructors at my gym and they are unsure about the subtleties. Is it a groin pull? or a twisting knee bar. I wish i knew because i find the opputunity from half gaurd to set it up a lot, but end up going out the back door instead because i lack the understanding on how to apply the electric chair. Anyone out there have any direction on this one?