
This mount can mount on any round tube and has a strap clamp in a compact housing, you won’t have to worry about exposed sharp edges or unwanted loosening.
Couple of other compoents help make this a complete unit:
This part is for connecting to the camera directly and the pipe and associated connections for extending the GoPro.

After I flew with the mount on the right wingtip, I changed the pvc pipe from 12" to 24" (went to Home depot for the PVC). The outside diameter was slightly too small so I made up the difference with some strapping tape. Results below.
My favorite of the 1000 pictures from the flight.
I have a few other mounting locations I want to try. But this one off the right hand keel is nice. A higher resolution camera would be nice. Maybe next on the list.