"Anonymous. I can see by your paragraph four that you have no idea how to bend your knees without sticking your rear out. With the 45 degree angle from the thigh to the knee will mean that there is also the same angle between the knee to the foot."

You really need to find yourself a protractor, as if these angles you propose were actually the case, you would have lowered ridiculously far. Under your proposal, unless you simultaneously introduce foot rise it is a geometric fact that the thigh would be HORIZONTAL. Obviously this is not how it is done.

"Bottom out, would be a sitting position wouldn't it. Very much like a Cossack Dancer."

Which is to say totally out of place in a ballroom hold.