This position is really under rated in BJJ. As it is viable option to establish a guard pass and submission, it is important to cover this topic at least 4 weeks per year. This position and the north south choke has been made very popular by Marcelo Garcia and I wrote a report a while ago. So go check out the link http://www.aucklandbjj.com/2014/03/training-report-north-south-choke.html I did not teach this technique because I wanted to cover more basic principles in the beginner class but will over it in the next North South position which will come up in 3 months time. Next week, we will be covering guard subs such as arm bar and triangle in the beginner class