13. The apparatus of claim 1 further comprising at least one intermediate guide tool having first and second elongate legs defining an elongate through-slot sized and shaped for receiving a rod therethrough, and a second opposed bone anchor engaging structure disposed near a bottom of the legs.
13. The apparatus of claim 1 further comprising at least one intermediate guide tool having first and second elongate legs defining an elongate through-slot sized and shaped for receiving a rod therethrough, and a second opposed bone anchor engaging structure disposed near a bottom of the legs. 17. The apparatus of claim 13 further comprising a driving tool attachable to the intermediate guide tool, the driving tool receivable in the through-slot and operably attachable to the bone anchor for rotating and driving the bone anchor into bone.