mook jong man
Senior Master
Thanks for the corrections, Mook and Geezer.
I think I get your distinction now between #2 and #3 in the original post, when I first read it I didn't really understand the difference. But you're making a distinction between the type of energy applied, constant forward energy vs a more yielding type of energy (right?). So given that, then I believe we use the same concept that you are describing, since forward energy is stressed in our school.
I didn't realize there were "hard" styles of Wing Chun, we're always told that if you have to use strength, you're doing it wrong.
In my opinion if you are using strength with your Bong Sau , you are no longer doing a Bong Sau.
You are doing something , but it is not Wing Chun.
Even if you are initiating the Bong Sau as an aggressive and invasive movement , it should still remain relaxed.
There are many important reasons for this , the most obvious one of course being that your Bong Sau maybe countered by the opponent ripping your arm down with his Fook Sau.
If your relaxed it's not too hard to recover from this , but if your arm and shoulders all tensed up it is not going to end well for you.