There’s one secret to hitting hard, and that is to completely dedicate your body. That’s the difference between a man going forward and a man going backward, no matter how big he is.
Ray Lewis, linebacker for the Baltimore Ravens
Here is a video with John Smith for the llawarra Ving Tsun School, Australia.
Sifu Smith was a student of Wong Shun Leung. He favors an approach which is analogous to boxing. Simple, aggressive, and built on a foundation of hard work on the basics.
Here is an interview he did with Archimede Tendindo of Omega Wing Chun, Italy.
Yes, Wing Chun is truly an international phenomenon.
For another good role model for hitting the bag, we have Mike Tyson, an outstanding example of the “Grease the Groove” idea.