Any good tips for firing up motor on engine stand?

jus my .02, If you have to fire it up just for a few minutes (no coolant, no charging system, etc.) Set it on the ground, I have fired engines on the ground, and they shake around alot, so the traditional engine stand with wheels might be dicey. You can set it on two by forurs or cement blocks or something like that and let er rip. I wouldnt hold the rpm at 3000 for too long or anything. I understand that there are situations where you want to fire the engine out of the car. Go for it, but have a kill switch and fire extinguisher at the ready. Sometimes just yanking the wire off of the battery or coil is all you need for a kill switch.