Early 80s in a B-model Huey, called out in a storm under low cloud to a yacht which had sunk 30nm off the coast. Found it by being guided in by a circling Herc, so we dropped a smoke float upwind of the wallowing dinghy, set up a pattern and sent the "teabag" down the wire, over the heaving seas. We managed to make 5 pickups off 5 circuits before we ran out of smoke floats, so on the 6th my hover was a bit ragged, and the teabag got his feet wet for the first time - all the others we had popped him into the open door of the dinghy.
We took the 6 yachties back to base, just made it with fuel, and the mongrels didn't even say "Thank you"!