I think I may look into one of these.1) Gate Keeper - this is a metal bracket that is bolted onto your tailgate that helps cover up the notched side of the tailgate that allows you to remove it from your vehicle. Installation takes less than 5 minutes. This is handy because it makes it impossible to simply walk up and remove your tailgate - requires an allen wrench to remove the bolt/bracket, which most thieves probably aren't going to bother having on hand when they're trying to sneak up and steal your tailgate in the middle of the night. If you do need to remove your tailgate for towing/moving/whatever, you can remove/re-install the bracket at will.
Both products are available from http://www.jimmijammer.com
My friend got his tail gate stolen at work one night.
Pretty crazy how people will steal anything!
Including my Spare in my bed.