In this video John Danaher teaches how to do the perfect mount escape. Danaher is big on the concept of “wedges” for control, and getting inside these “wedges” for defense and escape. He makes use of a power shrimp initially (not to be confused with a sliding shrimp, as he explains) to get a knee between himself and one of Bernardo Faria’s wedges (his leg). Special attention is paid to how the lead knee is inverted towards the ground in order to gain clearance past Faria’s leg.
Nice details here not only on the mount escape, but on different ways of shrimping, and what their uses are.