I want to film the side of a Mississippi River bridge from one shore to the other. Since the lens must be pointed perpendicular to the direction of flight, what is the best way to film this? I don't think there is any way to do it but to fly sideways manually with the remote controller. My fear is loss of signal as the bridge in Natchez is 1.2 miles long. I have Litchi but I don't know of a way to do it with that app either. Any ideas?