Scanned the whole thread and never found the answer I hoped that someone else has noticed about the BENEFIT to the customer using back-flips (or front flips) on exit.
DISCLAIMER: my 1299 tandems were mostly from Cessnas, mostly poised from the step and ALL before 1996. I was only a Tandem Examiner for 10 years or so.
TI's: Can you relate with the concept of reading the back of the customers head to interpret his or her level of awareness. (The tell-tale-pre-puke-head-bob is perhaps the most demonstrative of their head-cues.) But there are others more subtle.
For the last several years of my tandem career, back-flip exits were OFFERED to every passenger and nearly ALL opted to DO the back-flip, especially if the first customer in a group had done so and reported the enjoyment.
I could tell when a student was mentally present - not in sensory overload - and enjoying the freefall by head movements; looking at landmarks, responding to the cameraman etcetera.
I noticed that back-flip passengers were instantly alert after the backflips while poised stable passengers took longer to "wake up" and get into the amazing new environment.
Here's the theory. The sensations of the poised exits were NOT what they expected to feel but flips were EXACTLY as expected.
So rather than begining the descent stable, but with an inexplicable sensory experience and the time-space disorentation of that sensory overload delivered then, the flippers entered space with blue-green-blue-green visuals - AS EXPECTED - and the remaining experience was instantly more conscious, more conected, more memorable, less overloading, etc.
It's only a theory. Just like the carnival pony analogy that burned me out. Tip the plane of the carnival pony's path 90 degrees and the saddle 180 degrees and you have the job description of the TI. Here we go round stop & round stop & round stop. oof Yike's I'm a pack animal. been there done that