I have less than adequate working capital even if I knew where to get such a machine.
I've also considered using a ground plate, but again I don't know where to get one.
To put things in perspective, think about it this way, Dspark...
You're on a desert island... nothing but you, two ground rods, a shovel, and a sledge hammer. The rescue ship won't return until both rods are out of sight, you hit bedrock at 4 ft.
What do you do, assuming you have nothing else to work with? And you cannot go home or eat until the job is done?