I've seen your post and some of the solutions offered such as abandoning the lockdown and working other positions, which is not wrong advice. However, I believe that once your opponent brings his own heel to his ass, their are other steps you can take; every time he does that doesn't mean it's time to automatically abandon half guard, I believe that would be frustrating.
Theirs so many names in the 10th planet system and I wish I could just link you to the technique but i'm not able to find what i'm looking for, apologies.
Moving on...
#1. Calf crank submission- when your opponent brings his heel to his own ass, if you have double under hooks you can reach for his toes with both of your hands, grab it, finish with calf crank from bottom.
#2. Forget the name of it, Eddie shows where it tweaks the guys knee. Eddie has done this in his ADCC matches. It's like a kamikaze calf crank from the bottom. In the video Eddie commented on it mentioning that it is not really a submission, it only applies pain (such as the electric chair sweep/submission) in the video the guy was in pain and gave Eddie the pass. It is in one of the ADCC matches in the rubber guard DVD's.
I realize that this is sort of a shitty post, however, if someone more familiar with the system understands what I'm talking about, maybe they can link you to a MTS video or a submissions 101 youtube video, which would be a lot more help than me vaguely typing about it, not knowing names, etc. Hopefully someone knows what I'm talking about.
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