“The choke is the King, the armlock is the Queen, and the footlock is the dirty thief in the night. – @deanlisterbjj .
Heel hooks are a high percentage submission in nogi grappling because they defy many principles in Jiu jitsu.
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Jiu jitsu is a grappling system designed to control and disable an opponent by achieving dominant positioning. This generally involves bringing the opponent to the ground, clearing the legs to establish a pin before finishing the opponent.
Leg locks break all of these rules. Leg attacks can be entered from standing, inferior positions (such as mount), or used instead of passing. Heel hooks and other leg attacks challenge the accepted model and prove to be an effective alternative.