Flying helos is different than fixed wing. That's just a fact. Anyways, I flew wheeled helicopters and I would log my flight time per the faa rules. If you have already logged a bunch of helicopter hours using the army rules then just go back and count up all your individual flights and apply a 1x conversion of .2 for each flight. From here on out just start logging time per the FAA rules in your logbook.
Also, if you never break contact with the ground then why should you get to log FLIGHT time?? Kinda like trying to log FLIGHT time for time spent in the simulator.