Having just watched Iain's "angles" video I was contemplating how the feet move in kata. And something bugs me about it. In many instances the opposite foot to the one that moves in kata is the one that actually moves (or does most of the movement) in application.
For example the first simple "low block" and punch in Pinan Ichi (it's Pinan ichi in the style I do anyway, I think Iain calls it Pinan Nidan?). Using Iain's bunkai for these moves, seen in a previous video, that can be a shift off to 90 degrees (following the idea of 90 degree angle equating to the angle you need to adopt in relation to your opponent) to clear/control an arm and then lunge in with a finishing strike. Now we can see from that that the feet do not move in the same way as they do in the kata. In the kata the left foot moves (slightly back and to the left) and the right stays rooted, while in application the right foot moves and the left stays more stationary (Iain's pencil and pin compass concept from the angles video) .
Now here's what bugs me about that. That sort of footwork could actually be the one in the kata. There's no reason why the kata couldn't start with the right foot stepping out and to the right as you turn to the left and that would be more in keeping with a more practical approach to bunkai. It seems to me that a change in footwork, to adopt a good angle, is more the norm for Iain 's sort of practical bunkai rather than keeping the footwork from the kata (the head wrench takedown that follows the lunge punch is an exception).
Essentially it seems to me you have two ways (move the left foot or the right) of getting to a desired position (the low block) but the kata takes the least practical one to do so.
So I wonder why the first sort of footwork made it into kata and the second not so much?
Am I wrong that that the footwork in kata actually gets used more than I realise?
I'm usually fully on board with Iain's take on bunkai but this discrepency bothers me.