When it gets to this point, take a step back and take a break from it. This usually happens because you are still looking at it from the same perspective. It's like traveling the same road in the same direction but in different lanes. What you really have to to is get off that road that doesn't lead you to success.
I'm not sure if this will work for you, but for me when I can't figure something out, I will stop doing it and then train something else that has a similar movement, but not the same technique. Working on a different technique forces me to "get off that road" and change my perspective. What usually happens 90% of the time, is that somewhere during that training (days or months later), I'll get a glimpse of the missing piece that I needed to understand for another technique.
It turns out that when I train similar movements, my subconscious is working out the answer for the other technique that was giving me problems. The other thing that helps me is to just watch other systems for a hint of the same technique that I'm trying to learn. Usually that system will have an approach that I didn't think of.
I may have the real answer to the that Aikido technique. The position of the grab is similar to one of the techniques in Jow Ga that "catches a punch." For many years, just by looking at the form, I was thinking there's no way that Jow Ga technique can catch a punch. The reality is that if you are looking at it from the perspective of "catching a punch" then you are getting it wrong.
My thoughts on this is that the technique grabs the punching arm at 3 different locations.
- It grabs the guard - If your technique is early then it grabs the guard
- It grabs and slows a punch - If your technique arrives as the punch is leaving, Without writing a book friction slows the punch (what I often refer to as shaving a punch)
- It grabs flows with a punch - If your technique is late then it flows with the punch, which means instead of stopping the punch you are just trying to stay connected to the punch to either grab the punch at the end or grab the punch as it's returning to it's owner. This greatly increases the time that you have to grab a punch. Instead of trying to grab a punch at one specific place and time, you are attempting to grab the punch from the time it leaves to the time it returns.
For the lock that is used, your aren't using stopping force to twist the arm, you are using redirecting force. So when I grab an arm in that manner I don't want to stop the punch and then apply the twisting of the wrist. I want to twist the wrist as the opponent is committed to pushing or pulling motion. It's physically impossible to pull back and resist twisting left or right in a circular motion at the same time. I can't go straight and turn right at the same time. I can't go backwards and turn right at the same time.
For those who need scientific proof of this. Get a piece of paper . Draw
Point A at the top and
Point B at the bottom of the paper directly below
Point A. A straight line will allow you to travel from
Point A to
Point B. When you put energy to go left or right, then you are not longer going straight. If your punch goes to a target on my face and then back to your guard position (Point A to B) then you are not putting any energy into resisting someone twisting your arm. If you put all of your energy to resisting the twist then your arm is no longer returning to Point B.
We actually see this in the Hoax Aikido video where the guy gets a successful grab for a split second which forced his opponent to stop pulling and to address the twisting. This is why he falls off balance in the video. Everything that I explained above isn't Aikido for me. It's the principle that I believe to work for a grab in Jow Ga Kung Fu. I won't be 100 percent sure until I get a chance to spar with it.
What I am sure of are numbers 1 - 3. I have done this in sparring multiple times. The only thing I didn't do was grab the arm. At the time I was only focused on punching the target.