"David has done a great job analyzing techniques and concepts from several martial disciplines and creating a truly functional self defense system that works under pressure with an uncooperative opponent. It is not just a collection of random techniques, but rather a well thought out systematic and conceptual approach to practical and realistic self defense. If you are new to self defense or are an inveterate martial artist, you owe it to yourself to study Functional Self Defense."
"I have studied martial arts and self defense for about 20 years now including multiple weapons, CQB, Jeet Kune Do and Wing Chun...In my opinion, this is the most practical, down to earth book on martial arts I've ever read. I have a small library of martial arts books, so that's saying something...It brings beginner and advanced together into every technique on every page. Everyone has something they can learn here."
"So far this is the best book on self defense I have read, and I highly doubt I will find another book that is better. Great detail and explanation of all topics cover. The photos show great demonstration of techniques followed with good explanation in text. I have recommended this book and his website to all of my friends that are interested in self defense."
- David Hubbard
"I have an extensive back ground (over 40 years) in Karate, Escrima, Wrestling, Boxing and Reality Based Self Defense. There are too many books and DVDs on the market that are pure garbage. This book is not one of them.The information and technical instruction contained within is top notch."