Exactly as a_dam says. I have a center stand, and although I may need a little extra height for wheel up in the air ground clearance, I shim with a piece of wood. While on trail riding I don't carry the wood as I find plenty around. I've not needed both wheels off the ground at one time.
I can tip to the opposite wheel up in the air by either shimming one of the wheels up, or with a weight shift on the bike. Lines also tethered to immovable objects, tree, rock etc and I set up to fix a flat. Some how never needed a patch a flat, but have the tools and pump with me.