Depends on where in the drive I park - in some spots I can't fit the trolly under - it obviously isn't 100% flat:-)
Use the one in the boot to raise the car slightly - then slide the trolley jack under & bobs your uncle..
With a bit of "hrumpfing" I can get my head under the front without raising it - it's not an optimal working position - but it's ok for jiggling wires about... oh - and a torch is a good idea, even in daylight it can be difficult to see whats what under the car