I believe things that apply to fighting always apply to knife fights. VOA is important. Movement is paramount, moving off line is damn important, it makes your opponent react to you instead of reacting to the attacker.
I'm not liking the dog catcher. It's quite complicated and assumes the guys arm is trapped. It's not, if the attacker simply pulls his arm back you've moved your arms to the other side of your body and the attacker has an open shot.
My technique, others like it, if you don't, cool:
I teach/do block/strike the attack with forearms. IF you squared up on this attacker and the knife comes in, block/strike with your forearm against his fore arm as you angle yourself off at 45 degrees. The moment you make contact, you can either, throw a hard elbow to the head and step in, throw a hard knee to the soft mid section or just kick him in the balls. If the attacker cranks back again, do the same thing again. If the attack comes low, block low and step back at 45 degrees and use the same strikes. Other areas to strike are the throat, eyes, chest and bicep. A straight number 2 is also effective. From the videos I've seen of knife attacks is the attacker does not expect the defeneder to fight back and they do not use the unarmed arm for blocking. Basically, you have an open shot.
If the guy is stunned, dazed or relenting, it's up to you if you continue to strike. I'm of the opinion if someone comes at you with a knife, don't stop until the threat is down and the knife is out of his hands. Once you've "softened" the target and the strike comes in again AND you know the guy is worked, block the strike, go over the top of this arm at the bicep, snake under the arm and grab your own wrist. Turn your body towards the attacker. This will create a shoulder lock. If futher tenderizing is necessary, you have your legs to defend with.
This is on your judgement, at this point you can disable the arm by either pushing hard or dropping your weight. Or the better option, IMO, is to push very hard and toss the attacker to the ground and beat feet.
This is my technique, counter striking engages the attacker in the fight, this makes the fight a fight and not a stabbing. I'm not promoting fighting, I'm promoting defending yourself. There is no simple, fixed rules to fighting, you may have to defend yourself for 10 minute or you may knock the guy out on the first counter strike.
TL;DR or just don't give a fuck: Move, block, counter strike, move, block, counter strike, lather, rinse, repeat.
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