Well, the Go-Pro was having issues, but my discussion the the RC pilots was very off-putting. They would not come to our location; no cast members within 20 yards of the copters; and the ones with enough power to lift the camera were, well, potentially lethal. The guys basically wanted the cast to come to the airfield and shoot the final shot there, but with them 20 yards away from the copter. I was also unconvinced that the copter could hold steady enough to keep the cast in the field of frame.
I still may give it a try for a different vignette or episode, but probably from a different vehicle. One of the locals was offering a lift for us to use, and that might do nicely.