NOT how to do a wingover

I was flying for pleasure, and few maneuvers are more pleasurable than wingovers--so of course I did some. When I looked at the videos afterward, on the ground, I found that the cameras' locations and image-stabilization--or lack of it--more interesting than the wingovers, themselves. (But not nearly as much fun.) The camera with the strongest stabilization was bolted to the airframe, but the airplane moved around in its video, looking almost as if the camera was on a different airplane..
The airplane is a SeaRey amphibious flying boat that I built from a kit by Progressive Aerodyne, of Tavares, FL.