Where do you fix your action camera on your R3R ?

Since I usually lead road trips, I fix the action cam at the back to shoot the group.
The movie quality is not as sharp as it could be since it shakes due to the fixation support : on the rear indicators and flexible bar. Could not find a more convenient support.

(for the GT, I guess a better and fixed support should be the backrest, but I don't like it for my R).

I would think that would beat that camera to death

Hopefully not ! So far it bears it (model is Sony 4K with stabilizer). I'm afraid I see no other place.