Drove a lot of ground rods with an electric jackhammer.
You can do it by hand with a capfull or two of water if the ground isnt too wet.
Just poke a hole with the tip of the rod, pour in a capfull of water, and keep jabbing the rod in the hole. Wiggle it to keep it from sticking. When it stops going, put another capfull of water in and repeat.
Can get it down to about 7' that way, then hammer it on home.
Lot less work than swinging a hammer the whole way.
I know, some of you sick fuchs just got a semi...

Anyhoo, damn good on you Dave for helping out folks who can't.