Oops! Good Point about bonding....I forgot. If you have a bonding wire there, by all means, it should be used. The inserts for the mounting brackets for the removable installation have lugs and the wire is pre-attached befor the concrete is poured. If you have no bonding wire there now, the only way I could see to get one is to use a concrete saw to cut a shallow channel in the existing deck in which to bury a new wire. Others may have a better idea.