Drive Spikes with a Demo Hammer
Mauls and sledgehammers are the usual tools for driving huge nails. But a demolition hammer is a lot easier on your arms. To make it work, you need a ground rod driver, which is designed to ram electrical ground rods deep into soil. With a smaller demo hammer like the one shown here, you'll still have to drill holes before you drive. You can rent a demo hammer for about $50 per day. Some rental centers also have ground rod drivers, or you can buy one. If you buy one, beware; the driver and the demo hammer must use the same locking system.