Abstract: A golf swing playing aid device for use on a conventional golf club having a handle, an impact head and a shaft. The golf swing playing aid device may include a grip member having an outer portion and an inner portion. The outer portion may be adapted to be grasped by a hand of the user. The inner portion may be configured to slide along the golf club shaft. The playing aid device may include an electronic device including a rotational sensor adapted to detect a change in rotation relative to at least one axis, and a controller operably coupled to the rotational sensor. The controller may read the rotational sensor to determine the change in rotation relative to at least one axis. When the change in rotation is greater than a threshold amount, the controller may provide an indication to the user, thereby indicating over-rotation of the golf swing.

Abstract: A golf swing playing aid device for use on a conventional golf club having a handle, an impact head and a shaft. The golf swing playing aid device may include a grip member having an outer portion and an inner portion. The outer portion may be adapted to be grasped by a hand of the user. The inner portion may be configured to slide along the golf club shaft. The playing aid device may include an electronic device including a rotational sensor adapted to detect a change in rotation relative to at least one axis, and a controller operably coupled to the rotational sensor. The controller may read the rotational sensor to determine the change in rotation relative to at least one axis. When the change in rotation is greater than a threshold amount, the controller may provide an indication to the user, thereby indicating over-rotation of the golf swing.

Abstract: A golf swing playing aid device for use on a conventional golf club having a handle, an impact head and a shaft. The golf swing playing aid device includes a grip member having an outer portion and an inner portion. The outer portion is adapted to be grasped by the lower hand of the user. The inner portion is configured to slide along the golf club shaft. The grip member is configured such that when gripped by the lower hand of the user during a backswing the grip member slides down the shaft toward the head, whereby the hands of the user, when grasping the handle with the upper hand and the grip member with the lower hand can separate progressively during a backswing and then progressively return back into proximity during a downswing and follow-through of a golf swing to promote a more perfect and repeatable golf swing.