I think it helped my weight transfer a lot. I get a much better shot if I work on pushing my hips forward, but I don't like the feeling of it. Kicking the right knee in is very simple and takes no effort. It feels like the knee sort of collapse, so the weight has to be supported by the left foot.
Using the left knee is also something I've tried, but there I'm back to the same issue as with the left hip. I don't like the feeling of having to thrust it forwards. Using the right knee instead doesn't take any effort, it just starts a chain reaction that leads to the weight moving forwards.
I think Moe Norman also talked about this in a video of him at Youtube. It was kinda old, homemade, just Moe hitting balls and talking. Anyone know where I can find this? I definitely think he mentioned kicking one of the knees in and towards the target.