Re: The point of yonkyo
While yonkyo can be applied successfully without emphasis on the pressure point, I am reluctant to ignore it altogether. Yes, there are those who have a naturally high pain tolerance, but their existence shouldn't be used as a reason to diminish or dismiss completely developing the capacity to project energy strongly (and painfully) into the yonkyo pressure point. My shihan has explained that yonkyo practice is, in part, an opportunity to learn to gather the body's energy and apply it in a highly concentrated way through the forearm/wrist point. If all one attempts to do is manipulate the elbow when practicing yonkyo, I think the value in practicing yonkyo is lessened.