I keep a light on at night
buggy..
keep one tire flat and remove the steering wheel, a flat 42 inch tire with no steering is damn near impossible to move let alone even get on a trailer
the 07 sas truck, I have a lot of time and effort in this truck and I really don't want it stolen! I keep it parked under light and I have a dog sounds mean as hell when it hears a noise, be it a cat or a person. I know right away if someone is outside and i know when my mail arrives

I also have it rigged to only starts in neutral and I have a club on it. Right now while I am waiting on a part so it has no brake fluid.. extra bonus I guess
as for the 08 Colorado..I really don't care, I unload any thing of value like my GPS/camera or work files and parts. If it gets stolen I have really good insurance. I am also having the insurance adjusted for the work done on the 07 and when the buggy is finished and street legal it will be fully insured for full replacement cost. I really don't mind paying a few extra bucks for some piece of mind.
couple other out there ideas that would be fun, hide the alarm and use a police style siren.. fuel cut off located on the truck, just flip it as you walk by or put it inside the door jam. A chain from the seat frame to the steering wheel with a lock, a buddy uses this on his jeep. Paint it like a grabber green and make it huge and obnoctios..know one would steal it unless they wanted attention. A fun one would be the exaust cut outs that are cable or electronic, leave them open when you park it... cut of the switch to the dizzy idea. Easy ones are leave the t-case in neutral. Or leave the truck in low gear with hubs locked. If you have a doubler and lockers your set
Some states also have a free program you can enroll in to have you car pulled over between 1am to 5am if the run the plate and its out and about. My exes dad had his truck recovered before they had even found out it had been stolen! I have my Colorado on it, I don't drink and drive so I Have nothing to worry about if they pull me over.