Abstract: A clamp retains a snowmobile to a transport surface using a hook extending from the transport surface through a clamping bar to a pivoting handle. The handle is of the over-center type, and is pivoted through an arc to apply force between the clamping bar and the hook. A locking pin or lock prevents the handle from accidentally or undesirably being removed or loosening. A friction plate provides a low-cost and durable surface upon which the handle may travel while transmitting the clamping force. The hook is most preferably threaded or otherwise adjustable, to enable the clamp to be used with a wide variety of transport surfaces and snowmobiles. The pivoting handle is also readily removed from the transport surface, allowing the clamping bar to be removed without having to thread or remove the hook. In addition, only the hook remains exposed on the transport surface.