Great that you put the specs of how precisely it hovers, but you did NOTHING to explain what Course Lock is or why we would want to USE it. My application is if I want to shoot some video of something moving in a particular direction and I want to change orientation of the heli while doing so. It would be in the film industry a Dolly shot with a Pan movement. so the camera and heli are moving and the heli is rotating to keep subject in frame. Very nice for LOS, but confusing in FPV Flight.