I lock my Tow Bar in the receiver and the cross bar to the Toad, the tow bar to toad connection I just use the Road Master supplied pins. I am to lazy to take the removable parts off the toad when we are traveling and locking them on eases the worry of someone stealing the parts while I am a long way from home. On local trips of a few hours from home, we don't bother with the locks, as one of us can drive the toad home, it is the over night trips I start to worry especially when we are sight seeing in the cites.