Good tips, bear.
I'm anxious to get my full cage, but financial priorities and instant gratification on more fun things have put the cage on hold. I'm considering having sheet metal cover the parts above the front passenger area to stop me from making a stupid maneuver (like trying to support the vehicle with my hands, upside down) and to potentially stop objects outside of the vehicle from hitting my head.
After my dumb leg maneuver, I doubt I'll wheel without some sort of door on the vehicle in an attempt to protect me from my instinct.