If you play with heel hooks at your gym, then this is a must watch video. The Outside Ashi Garami is one of the most desirable
Here's an example of a Leg Lock Escape done wrong, by Ronaldo Jr. against leg lock specialist Craig Jones.
If you have been following John Danaher and his "Death Squad" you know they have been killing the competition using their leglock system, especially heel hooks.
Here is a quick video where I explain how to prevent the Ankle Lock, by creating an angle in order to free your foot BEFORE your opponent starts attacking the submission.
Professor Gustavo Gasperin explains and helps to identify the main Leglock positions.