The simple answer is practice, practice, practice...like stated above. I agree about most of the leg locks I see done in shows, tournies, etc. By the way, I address the ankle lock question in an interview on
www.budovideos.com this month.
I would add however, that a leg lock is basically the same in judo, bjj, sambo, etc. The difference is not in the submission but, how one moves to set it up and gets to the position to pull it off. The major difference I find between BJJ and Sambo (I am no BJJ expert but have cross trained a bit), for example, is movement and positional in nature, not in the final submission. If people are focused on the submission only, it is misguided training and philosophy. without the movement and position, no submission will work.
I have worked with some judo guys and found the angles of attack a bit different as well. Lastly, in my experience in sambo and those other styles, another major difference is in how things are taught. Sambo has always been more akin to a wrestling team environment with constant drilling and no formality.
Thanks for the kind words about the clip. If I were Guy #1, I would run over and kick me in the head while I was locking Guy #2! LOL That clip was part of a drill to experiment movement possibilities after being pushed - go with the backward momentum. I would more likely hit guy #2 in the nuts and get back up to fight guy #1
