Yeah, get it bolted to the floor. We don't want you to be the "other guy" in the Backyard Buddy comercials: the one with the collasped lift with the car crashed down on the Cobra.
Get you some flourescent lights for that shop, so we can see better. Get some with the "electronic ballast": they will light at zero degrees. They won't keep you warm, but you can see how to light the heater on a cold morning!