I had this happen to my other car before I had my H2. The problems went away after the kids grew up a little more, and probably moved away. But there is hope.
Put motion sensor lights near the cars in the driveway. These can be set to however sensitive you want. Usually people walking by on the sidewalk will turn it on.
Then, sleep in the F150.
They'll never look for you in there.
P.S. Buy your own paintgun, and some nightvision goggles!
