Can anyone recommend good Locking Systems to secure accessories to a Roof Rack? I know the Yakima RTT will lock to their rails. But what about securing a hydraulic high lift jack, and recovery boards? ARB hydraulic high lift jacks and Maxtrax boards ain't cheap! Are there locking devices and or straps that are hard to cut? Other than using a short bicycle cable lock? How do you experienced off-roaders secure your expensive gear to a roof rack? Or do you keep it inside the Rig?