Matt Darcy shows a system that everyone should start out with when attacking the back.
Matt Darcy shows a drill to train your back recoveries. He learned this from Marcelo Garcia and Paul Schreiner as a blue belt. It should be a staple in your game.
Matt Darcy shows how to attack the turtle position using the belt line hook. Finishing with a Juji Gatame arm bar or breaking them down to get to the S-Mount position to end up in S.A.P.
Chris Fletcher shows the simple collar choke finish after taking the back from the turtle position using the knee scrape