If you've got access to a Yoga Ball (or whatever you might call it), some dirt diving with one is helpful.
Drape yourself over it and practice cupping air to slow your descent.
Put your belly on the floor, place your feet against the ball like you are in freefall/rw work and use the ball to remind and build your physioneurology. The resistance you can apply will help you next time you're in freefall.
If you have weight sticks, laying down, place one behind your neck and drape your arms over it like a yolk. First it locks your axis so practicing turns gets more solid. Second if you do this a while then remove the stick, everything feels fantastic. It's like training-clothing.
Got any other tips? I'll keep a look out!
-a



