I would agree there are some differences, but not all that much. The strobe unfailingly stands out and provides a good target. And we were not marking LZs, usually we were identifying our location for a hoist operation.

I have never seen a party needing rescue to have anything like adequate signaling gear, often not even flashlights. What did work was ignition of a campfire. If we were alerted to overdue groups and were heading into the general search area, a campfire, alerting us either through seeing the flames or smelling the smoke, made contact very simple and easy. Of course, there are times and situations where you do not ever want to start even a small campfire. More than a few destructive, large scale conflagrations have begun that way.