1. Core Muscles. Stand on a turntable and swing a club. Can't move the arms/hands without a counter torque. Wonder why?
2. Swing a "rope shaft". Did U get forward bend of the rope at impact? NO, Would it be throwaway if the rope is thrown ahead of the hands? Why would a "stiffer" shaft be different? Should a "stiffer" shaft have OTHER swing physics? maybe not?