Abstract: An apparatus wherein a mounting plate is secured to a support plate, and the support plate in turn including saddle members for securement to a rearwardly positioned post. The support plate includes an upper and lower fastener to permit rotary positioning of the support plate to the mounting plate to orient an impact post rotatably relative to the support plate. The impact post is mounted to a spring hinge front plate, with the spring hinge front plate including a plurality of spring hinge members hingedly mounting the front plate to a rear plate. The front plate is hingedly mounted permitting one hundred eighty degrees of motion of the mounting post securing the impact post. A modification of the invention includes a clutch member joining the mounting post to the spring hinge front plate.