Bill, if you can get me a video of this, I'd love to try it. I think I am lacking in some mental ability in translating words to physical actions, but I love a good nikkyo. We have quite a few super flexible young men we train with, and pain compliance on some techniques is hard to come by. I've got one that I refer to as "the fancy nikkyo" that works with pain compliance on all of them, and I'd love to learn another one.
I'm trying to find a video for you. Tell us about your fancy nikkyo in the meantime. It's just a discussion, so you don't have to be a Shihan to offer something.