Perhaps I'm a slow learner, but it took four thefts of my blowers, trimmers and edgers out of the back of my truck before I decided to take security measures. I now use a cable lock system that I run through the handles of my blowers and trimmers in the back of my truck. Sure, it's a pain to have to lock and unlock at every job site, but after $2000+ in theft losses over the past four years, I'm willing to spend a few extra minutes each day locking and unlocking it. I also bought a dash cam that I attached to the rear window of my truck. I don't record everything, but when I'm in certain neighborhoods I record everything while I'm out of the truck.