I had an earlier thread about whether everyone thought locks for detachable items was a good idea. Seemed to run about 2 to 1 against the necessity for locks. I could write a thousand words about how honest and trustworthy the "biker" community is but in today's economic environment, I still think I'm going to invest in some locks. HD sells them individually or in a set of two. Didn't appear to be much of a cost savings by getting the pair. Would you guys get the pair and just put one on each detachable (tour pack and backrest for me) or spend the extra money to actually put two on each detachable? I'm pretty sure which way I'm going to go but I value everyone's opinions here more than I can express!