[QUOTE=Graham H;1041550]Fook Sau is to learn how to control the elbow for the punch. Its not to control your opponents arm!!!
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Are you serious? Control your own elbow – for your punch? Think about that. Why would you need to do that? Why not just practice doing that with your punch itself? Why do an entirely different action? How is that good training?
Anybody who has ever been in a fight will know that trying to control arms is not possible and its stupid to think that way!!! There is never any time to make arm contact let alone manipulate them and if it happens its over a the blink of an eye.
Wow. Then I guess it really makes no sense to practice chi sao since there is never any time to make arm contact, there is no sense is learning things like “trapping” or doing the lop sao drill, etc.
If you’re right, why don’t we just take up boxing, which has proven itself vastly superior to WCK in terms of free-movement striking?
The basic idea of Ving Tsun is to attack with the punch and keep attacking until the other guy is unable to continue. We must be free of contact so we can hit. The cycling of Tan Sau, Fook Sau and Wu Sau allows us to do this effectively. Bong Sau, Pak Sau and Jut Sau are there for us to open the way for the punch if required.
You think this is the “basic idea of WCK”? Interesting. And what do you think your opponent is doing while you are punching? Did it ever occur to you that he might just keep punching or try and clinch or shoot in, etc.? How do you deal with what your opponent is doing? Simply by punching?
Why not control your opponent while you strike him?
The usage of the elbow for the Ving Tsun punch is not a natural way for us humans to move our arms. We rarely, if ever, require the elbow to be inside and in front of the body in our everyday lives so SLT is there for us to make this possible. These are WSL’s words.
If these were WSL’s words, then WSL was an idiot. And I don’t think he was an idiot. 
Keeping the elbow in and down is quite natural in certain circumstance – and all clinch fighters do it.
The Chi Sau bubble has ruined what in essence is a very effective form of unarmed combat. 
Yeah, that makes a great deal of sense too – the signature drill of WCK is what has ruined WCK!
Maybe, it’s because you have grasp of what the signature drill is trying to teach you.