In a recent book, 75 Down Blocks: Refining Karate Techniques, Ryukyu Kempo instructor Rick Clark analyzes the down block and gives many varied interpretations of this movement--block, lock, etc. (Outtakes here.) I bought this book recently. The idea interests me--an in-depth study of a single technique, aiming to show that the kata contain very useful movements if one interprets them carefully and somewhat broadly. (I also bought it because Mr. Clark lives in the same small town as I do, and is a fellow Modern Arnis practitioner--stick disarms are included, based on Modern Arnis principles and of course the down block. I have never had the opportunity to meet him--he keeps something of a low profile in town, teaches only in a private setting, and the only public appearance he had scheduled of which I was aware he ended up canceling.) I have not yet read it though I have skimmed through it.
Mr. Clark is a kyusho practitioner (see also here)--I don't know his lineage--and pressure point techniques are included in many of the techniques.
Mr. Clark is a kyusho practitioner (see also here)--I don't know his lineage--and pressure point techniques are included in many of the techniques.