Tom, I tried yesterday evening, but unfortunately to no avail. There was one part in the video that really convinced me to be a found. But it was a flat rectangular stone. - We left it in the middle of the whete field!
I was trying a wp mission with focus at least 100 in front an minus 112 meters to point the camera down all the flight lines. That was not a good strategy as I had to hold the gimbal wheel down all the time, otherwise it pointed up front. Do you know a better way to tell it to look down 85 or 90 degrees as the Spark moves forward or backwards?