I had the front desk call a helicopter place and put my name on a list. They need a minimum of three, so if they get two more, I'll come tell you and they'll come pick you up. While I was waiting by the fire, sitting in my down mummy bag, the Australians wandered in, back from the cruise. That ride was one of the high points of the trip, literally and figuratively. They rev up their engines for a LONG time, then run down the runway as fast as they can and keep trying and keep trying and keep trying and eventually they just barely manage to lift themselves off the ground.
Choppers are also a heck of a lot more maneuverable than planes, duh.
The pilot took us up and down some waterfalls, practically literally. We'd also pull a little free-fall from time to time. It was by far the best roller-coaster ride I have ever been on. The pilot took us up to Quill Lake, that feeds Sutherland Falls, which I now didn't mind having missed on Day 3. Then we went up to a second lake that was up so high that it was mostly frozen.