Anyone using donut spares?

My plan is to roll with the 4x4 scenario and get a 12 volt pump and a plug kit. I took out the well to make room for exhaust from mini tub. Im AAA'n it if I get a sidewall dinger, but with a Sure Grip and two different heights of tire, this is my solution. I can plug a tire pretty quick. and if the lead is long enough for the pump, I can do it 10' off the side of the road....if there is space of course. Or....AAA. Most times you feel the car getting mushy and you have a second or two to get off the road to a spot. I dont know if I have ever run down to the rim. I ran over a box of razor blades that was in the road once and still made it a couple blocks to a level safe place. Just got to pay attention to what you are doing.