Hi Rob, that's the point (hopefully it was clear) of what I was saying, enter and use the wrist grab of uke to turn his body. We didn't do any hanmi handachi with Ikeda Sensei when we were there recently, but I think his style would be similar to yours...When you grabbed his wrist, he took your balance and opened you to shiho by moving his center (his arm was of course attached to it
). That movment opened your body so that you couldn't effectively strike or kick, and shiho (or pretty much whatever) was there. Doing that from your knees must be harder...but still doable.