They make a post that actually has a big round plate on the end of it and you don't drive it into the ground at all. It rests on top of the ground. The poles cant move cause they are bolted to the side of the dock with big clamps you can even ratchet the poles up and down as your water level goes up and down, and the walkway of the dock is then grounded at the shore. Course you have to have a fairly level spot to put this type of dock which I do.
They sell them at Fleet and Farm I just can't recall the name at the moment.
RC
