Swinging a weighted head on a flexible shaft exposes tempo problems immediately, because the head lags behind whenever the transition is rushed. That feedback is the whole point. A silicone ball instead of a hard head means it survives contact with a wall, and the same tool loosens the shoulders before a round.
Swinging a weighted head on a flexible shaft exposes tempo problems immediately, because the head lags behind whenever the transition is rushed. That feedback is the whole point. A silicone ball instead of a hard head means it survives contact with a wall, and the same tool loosens the shoulders before a round.
