That brake switch thing can be? tricked too, if you try with your key you can turn it partly on and take the truck into neutral then start it up there all without touching the brake. And as for pulling fuses and relays, this can lead to problems, they new fuse blocks have very high tension terminals, you notice how hard they are to remove the first time, they have a life span of removing them only 4 times and they lose their clamping force and could start to get loose intermintantly causing you problems, I think you can splice into the fuse pump wiring and go inside the cab with a switch or fuse hiddin inside the console or somewher else, if the theives see a switch or fuseholder they will just think its for aftermarket accessories. This is what I have done in the past anyhow........You can also put your vehicle in 4WD to help prevent someone with a set of wheel snatchers to pick up the back of your truck and drive away with it, they would need to jack it up, put dolllys under the front wheels, then jack the back and tow it that way, it will slow them down anyhow.....