Just gonna have to drive it more often, it's a lot less likely to be stolen while you're in the seat

My truck has a number of things that the average person doesn't know how to deal with, 10 speed unsynchronized transmission, air starter with a few steps to engage, and the engine needs fuel before it'll run.. Only someone familiar with it could easily drive it away, I suspect the average thief would have some trouble, or need a rollback/wrecker.
A battery disconnect is a good idea usually. No use as a theft deterrent in my case, as it'll start and run without a battery, which means a key switch is a little bit useless too.
Grigg