This was my 5 attempt at filming my buddies planes in the air. Biggest problem I did not bring my tablet and he forgot his. so I was doing it from a 4.5 inch phone. Trying to see the plane was next to impossible. Most all of it is from line of sight. Pointing the drone where the plane is.
This from the other day I was coming back from along flight with my P2v+ and had some batteries left.