Mark Walsh wrote:
Training tool for most of us.
The only thing that really works in the end.
Just my 2 cts, which I cannot proof as I am still not good enough.
I was told, in fact every throw is a kokyunage and works by kokyu power. Others explain kokyunage as "timing throw".
I would say it is timing and very sensitive reaction on uke's direction and extend of power. And that is, what all aikido technique is about. If you cannot do a kokyunage, you cannot survive against stronger faster and more flexible opponents. Then you are just doing Jujutsu with the aikido syllabus.
So it is a training tools to expand your sensitivity and adequate reaction and timing AND it is the only thing that works even with much less physical power.