I have come to this late, thats good because I get to look and see.. The first thing I noticed was, the same barbs by TW and RMacR, (are you married).
Next, I would have to say, with my background, the better your foundation is, the better for stability, but not flexability in movement, but not always. (quick huh)?
In the early days of Kajukenbo, the stance was very strong, yet the hands were and are today very fast. In teaching those early katas they were the katas of the Okinawan lineage, along with the stance of the later Japanese, some say earlier. (depends on who you are reading), it is moot, which came first the reptile or the egg. (the egg of course)
The information that is avaliable from the Mainland is far from correct if looking for lineage, but for new systems who cares about lineage, it is only as old as the person who developed it, (in reality).
This is going to get deep so get your waders.
We start out with the one penny a day doubled and we (some) know how quick that adds up to big dough.
Well the same thing happened with Katas and Techs. Someone had one borrowed two, now they have three and got two more and added six quick techs per, then cut them back or in halve then they have ten little Katas..
Now while borrowing and taking with out permission (no copy right) we have solid stance and cat stance we mix and now we have both in varing degrees.
When turning with the upperbody you can have a strong stance and be able to deliver kicks or throws or punch's, move the right heel up and twist and you have an ability to move to your attackers left and maybe, hit, kick, throw or escape to a better position.
I really don't understand the arguement when applied to real situations...
Time in grade has some benifits, but the forms that are being used dictate what you are doing in the dojo, the fight or movement by your advisary dictates what you do in the altercation. If you have to worry about your heel in the air or on the ground you need to go back to the basics...
We can go on further and try to compensate for size and the ability to srike while in a moving position (Ali), boxer vs puncher, Ah, the western "sweet science" pretty simple.
Go to a gym and workout with boxers, you will get a good idea about strength and movement, different styles, is it really that hard to understand? Not from where I am standing.
Ps. if you look at EPs first book and then check his second book you will see much different thought. Why??? Different people wrote it. (No copy write)
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Gary