Early on when this ride opened, for safety reasons CMs really pushed down on the back brace part to make sure guests were locked tightly. As time went on they weren’t doing it quite so tight. I have moderate back problems so try to use other parts of my body to prevent stress on my spine (eg- Thunder Mtn I’ll use my legs as shock absorbers so jolts go more through my legs than spine). FoP doesn’t jolt, but I found a few rides locked in so tight I could barely breathe or move, and that tension isn’t the best thing for my spine.
So now I take a deep breath and extend my belly a bit when the CM comes around to make sure everything is locked and tight. Obviously this is a safety mechanism and it’s not advisable to leave any gaps here - just a smidge of breathing room.
There is the back brace, leg braces and the handle bars to hold. The ride feels like Soarin’ but individual, with more leaning left/right and down, and a physical position similar to TRON.