Lin Hua-wei points out that in order to ensure that a batter will maintain a constant center of gravity while he swings, a huge range of techniques have been employed. As well as constant verbal exhortations, some coaches have even resorted to tying ropes around their batter's waist, putting blocks in front of his left leg to prevent the body from following the direction of the swing.
「為了保持揮棒時的重心，各式各樣的方法都有人用，」林華韋指出，除了不斷的耳提面命，有些教練用繩子綁在球員的腰部、或者在球員的前腳放個障礙物，只為了讓球員在揮棒的剎那，身體不要太快往前傾。