All the major leg lock positions are interconnected. Whether it's saddle (AKA cross ashi AKA 411 AKA honey hole), 50/50, outside ashi, or "the reap", every leg entanglement is closely related to other leg entanglements. Generally, you're always just 1 body movement away from the next entanglement.

Breaking mechanics are everything. Have you ever seen a video of someone ripping a leg lock on someone, and the other person is just "eating it", looking tough, and not even thinking about tapping? When this happens, either the person applying the attack has incorrect mechanics, or the leg lock-ee has just accepted the consequences of the attack. Ripping on a heel hook with bad breaking mechanics is the literal definition of being "all bark and no bite".

You can attack leg locks from the top or the bottom. Although we traditionally think of leg lockers as guard players, you can attack them while passing too. Dropping back for heel hooks is trendy right now, but jumping on an Estima lock from the top can be life-altering.

Every rule in leg locking seems to have an exception. You can break a leg without a knee line. You can get a break on a heel hook by ripping it across your body. You need to understand the fundamental rules for leg locks, but really only so you know when to break them.

If you can get the bite, you can get the break. This is something to think about for training safely. If you can get a leg isolated, controlled, and can secure a good fight on it, you can definitely break it. Rotational movements are not necessary in the training room.