Apparatuses and methods for engaging and/or securing a generally vertical member of a vehicle or other object are provided. The apparatus includes a second plate secured to a first plate and rotatably moveable with respect to the first plate. The first plate has a throat for accommodating the generally vertical member of the vehicle or other object, and a notch angularly displaced from the throat. The second plate has a first arm that extends across the throat to secure the generally vertical member within, and a second arm that moves into alignment with the notch, concurrent with movement of the second plate. When the second arm is aligned with the notch, a biased latch can be urged to engage the notch to secure the second plate in a generally fixed orientation relative to the first plate, thereby securing the vehicle or other object.