Leglock submissions are alive and kicking! It seems like lower body attacks will not go out of fashion soon and how else could it be, when time after time we witness their efficiency on the highest level in BJJ and submission grappling? Many practitioners have based their entire game on leglocks and try to enter heel hooks, knee bars, footlocks, etc. from everywhere!
5th degree BJJ black belt Sammy Al Jamal, in this video shows, for reference purposes, some truly unique footlock submissions, that are truly effective and also easy to apply.
The sneakyness and rareness of these footlock submissions make them so much more effective and much less predictable.
It is for these reasons, that their chances for success are very high.