I used to have mixed success with this choke, but when Denis and I made this instructional I picked up three details that made it MUCH more powerful and effective. For me these three details were:
1 – dipping my shoulder when initially sinking the arm across the throat
2 – getting my hand well past the bicep when locking your arms
3 – putting my head to the side of the body during the roll, NOT on the back
Stephan Kesting
www.grapplearts.com