Run ups on the move
Run ups during taxi certainly do have their place. Namely gravel strips, most have no provision for run ups. An old boss (a LAME) use to endorse the practice, citing that brakes were alot cheaper than props. On that note, it is wise to park the a/c in a position that will require min power to taxi. ie Don't park with the nose facing uphill, yes it happens alot.On your walkaround, clear the area of large rocks around the props with your boot.