Our friend Professor Jean Jacques Machado has a feature in this months Jiu Jitsu Magazine specifically on how to attack the turtle position via a series of chokes. Two things I love about this article... one is the variety of chokes JJ offers, with variations I have not seen other places. And the other is the constant inspiration Jean Jacques Machado offers all of us where a man with virtually no fingers, nor a functioning hand, can specialize in a variety of collar chokes. He never let his birth defect EVER slow him down not hold him back. Respect.