As both a martial artist and a scientist I find the concept of using a sinewave to generate power in lieu of the hip twist to be fundamentally flawed. I personally think it ruins the look of the patterns . Without twisting the hips the punches become more like arm punches. The up and down movements for horizontal strikes are a waste of energy (any movement of the striking hand that is not in the direction of the strike does not add to its power). The bobbing up and down decreases the balance by raising the C.O.G. Personally I am glad I have never been subjected to the sinewave as I find it rather non-sensical.