i am thinking we should change the "killing knee practice" to the practice of doing it sitting on an office chair with rollers. now a day, we sit more than kneeling, so the chance that we get attack while sitting in a chair is much higher. so if we switch to practice on chair with rollers or without rollers, then we can kill two birds with a shotgun so to speak. for example, if you sit in a meeting room and your meeting mate reach across you to grab the last donut, you should be able to intercept the grab, took away the donut, put your office mate into a kotegaeshi, and proceed to eat the donut.
wonder what the japanese term for practice on office chair.