Spare Tire Roof Rack, Which One to get?

[CrnCnn]

I am putting together a list for things I want and the setup here is suiting me just fine, I found all the part numbers for the rack, basket and spare tire mount. My question is whether or not you guys that have mounted your spare tires up there have come across any lock mechanism for the tire or do you just hope no one takes your spare.

EDIT: Q: Can I lock it?
A: Yes, it accommodates lock styles with a shackle diameter of 1/4".

I read that on the Yakima website. Thanks anyways