id say he means put a few wooden blocks onto the jack?this way they will be touchin the car but as you jack it up you should still have enough clearance that you wont touch your skirts!drive her onto a few wooden blocks before you start jaking her up and just keep adding more blocks till ya jack dont touch the side skirts
you could use the wood on the actuall jack but i ment drive the are onto blocks of wood so it raises the car up b4 u start jacking