This is something to highlight as to the differences between TKD and karate and why bunkai might be a low yield effort at least with regard to KKW poomsae. Within the Okinawan karate I am familiar with, the motion within the kata are only regarded as starting places. It is 'fine' to change up the directional flow or the bodily posture of the presenter to come up with a viable application of the form. Some of the explicit usages I've been taught in fact append footwork not even in the kata originally itself, and senior karate-ka even exhort their juniors to not be bound by the embusen of the form when seeking to master the meaning of the kata.
Exactly. I've seen some reverse engineered applications from forms that were so far removed from the actual movements themselves that I could hardly recognize it as being related. People stretch all sorts of applications into these forms, to the point of ridiculousness.
My point, if you wish to study applications based on okinawan theories, then my suggestion would be to study those okinawan arts themselves, and keep them separate as much as possible. I study taekwondo and hapkido, and as much as possible, I keep them separate, which is easy for me to do, because my mind works like that. Compartmentalizing is a natural thing for me, work is work, home is home, martial arts is martial arts and I have no problems keeping them all separate.
Here is another observation: Those who have the least understanding of kukki taekwondo are the ones most likely to veer off and adopt things from other arts to fill the gaps in their knowledge. It is only natural and I too was guilty of that early on. We all were. That's one of the reasons why I have so many books, being part of the bruce lee era, I and a lot of people who lived through that listened to Bruce's words "If it helps you in a fight, then you should use it, it doesn't matter where it comes from". We were all making chop suey back then, blending whatever we could into our own personal art.
I did that mainly because I did not have access to very high level instruction, and therefore I was forced to teach myself. So Bruce Lee's permission in this regard was the sort of thing that I needed to hear. But ultimately, for me, Bruce's words were not right for me, because doing what he said I could do prevented me from seeing my chosen arts in the manner that they were meant to be seen, by the pioneers and creators of those arts.
It's wasn't until I gained access to very high level practitioners in taekwondo and hapkido that my ideas started to change. It suddenly became important to me to understand these arts from the perspective of those pioneers, especially if I wanted to travel the long road that they themselves traveled. I started thinking less about myself and what was important to me and more about the arts in their pure form and what was important to that. Of course we all put our own signature on the arts that we study, the bottomline is that I wanted my arts to transform me, and not the other way around.
Yet another way to view it: When study something like kukki taekwondo, or even itf taekwon-do, there is a framework and picture of what we are supposed to look like, and to a large extent, to think about. Our understanding of our art is to a large extent like building a giant jigsaw puzzle, and our job is to first understand what that puzzle looks like, and then put the pieces together in the right way so that we have an undistorted picture.
Some people, a lot of people, maybe even most people, do not have all the pieces. But instead of seeking out more pieces of the puzzle, they instead grab pieces from another art and use those pieces to fill in the blank spaces. Do that too much, and you end up with a puzzle that looks completely different. Then when discussions such as these come up, you are looking at your puzzle, while I am looking at mine, and we each think we are looking at the same picture when in reality we are not.
The people who most enjoy what I have to say and take to heart the things that I have to say, are the ones who, like me, are interested in seeing taekwondo or hapkido or whatever as they are meant to be seen, from the creators' eyes and viewpoint. To that end, I try to freely share concepts and philosophies as explained by those pioneers, so that people have a road map as to where they need to go, if they wish to follow in my footsteps. I try to as much as possible give them the cover to the box of the jigsaw puzzle so that they can see ahead of time what the picture will look like.
Those who are "opposed" to me, like adding pieces from different puzzles, because frankly they don't care what the accurate picture of taekwondo is about. What they care about is their perspective, their american god given right to do whatever the hell they want to do and no one is going to tell them different.