we call it ' Motion Sickness ' .
If you want to get really cunning , you could split a stick , like grafting . And fit it over the flap T E at the Fuse . ( & paint it dayglow red )
Then WE could SEE where the FLAPS WERE , in the manouvres . If your really considerate a felt marker & 10 degree increments marked
on the fuSELAGE SIDES ( OR 5 dEG. ) WOULD CALIBRATE IT .
Camera might need to be on the T Edge line tho ?? .
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If you really want to upset their equilibrium ,
Mounting the camera out there ON the FLAP , so Its Moving , might do it .
A similar sized lump on the flaps other side , should even things up .
If we're going to get all aerodynamic .