I've just been reading the Kuzushi Waza topic with interest and from it I have a question that is slightly off topic regarding Kihon 8.

This is a relatively new Kihon for me and I have been shown two different approaches to this:
- The first method I was taught maintains some pressure with the controlling knee and then the last double shuto hand movements are a strike to chest (but with the opponent’s arm protecting themselves). A change in stance allows a great deal of power generation in this strike. I very well may be wrong on this, but I think that the pressure on the knee is released at the time of the shuto strike with a change in the stance (Shikodachi - zenkutsodachi?)
- The second method seems to have increasing pressure/movement with the controlling knee at each stage of the kihon following the head block (I found this much more unbalancing as the recipient!). Then the last hand movements are used to control the opponent’s arm and then push them away rather than strike the chest.
I'm interested to know what peoples opinions are about the two different approaches, particularly if you've used both. If I've got the wrong end of the stick thinking that there is any real difference feel free to put me right/ shoot me down!
I suppose the bigger question is how much flexibility is there in kihon gumite providing you are using Wado principles of movement?
Thanks
MF