[golfbulldog]

Not sure if this is right but I think that you are asking about the difference between dual vertical hinge ( which keeps the shaft/sweetspot on plane) or the vertical hinge which doesn't...

You are describing a controlled steering procedure i think... for non-full power shots it probably has little bad effect...as long as you know what you are really doing and not what you think you are doing... then you can repeat it and modify it according to need.