Somewhere I've read that you don't want ground rods by pools because you don't want to attract electricity. Wouldn't that be sort-a the same thing with the grid under the pavers? Granted I realize by bonding everything together, you have the same potential. Doesn't the pool with the rebar (or metal side) kinda act like a "Farrady Cage"? (sp?) So if there was stray voltage, it would get sent down the #8 bonding wire.
