Don't forget the lock!!!
Anybody who has used roof rack system knows they can really howl if you don't use a fairing. I didn't know there was a locking device for the fairing~~ until mine was stolen. The locking device only secures the mounting bracket so be sure to purchase 'difficult to remove' bolts & nylock nuts. None of this will stop a determined thief but anything you can do to slow them down will make them look for an easier target.