I'm not exactly sure what "flip down mounts" are but I use the standard GoPro "stick-on" bases but with modification. I drill a hole in them and run a screw thru into an existing hole (wingtip screws or whatever). If you forget to tighten the finger-screw thing, the camera tips back into the airflow.
I fly very often (once a week??) with with three cameras, haven't lost one yet. You can kinda see the wingtip mounted cameras in my videos.