Thank you very much!
I experimented with anchoring the physics to the camera coordinates instead of world coordinates. It makes the feather a bit easier to control, but doesn't feel right for the overall movement. I think I'll keep the physics as they are. From my experience during testing, you can get much better at controlling the feather in just a few attempts if that's your goal. Of course most players will only do one playthrough, and as long as anyone can get through with >0 words, that's fine too. 🙂