The following video is from a very good friend of mine named Richard "Army" Maguire. He has an amazing background (martial artist, animal trainer, carny, etc.) and is one of the most innovative and smart trainers I have ever met. He works with a number of fighters (boxing, MMA, etc.) on the West Coast in regards to Indian Clubs and hand conditioning as well as being an inventor of training equipment. BTW - Guro Dan Inosanto has told me on a number of occasions that Army is a "genius" and "does things I have never seen before"... a pretty astounding endorsement if you ask me.