How do you monitor the anode? Pull it out and examine every year?
What different characteristics do you look for in determining if it is time for a new anode?
Should any precautions be taken so that the threads don’t seize up – so that the anode will unscrew without damaging things? I would guess that if such precautions are taken, they cannot interrupt the electrical continuity from the anode threads to the water heater – correct?