I'm fairly good at flying my Phantom 3 and so I decided I want to create a video adventure in which I chase my RC boat across the pond. I got the idea from re-watching an old James Bond film - From Russia with Love. It's a great Chris-Craft style boat and would make a good video. This will take 2 operators of course. One for the boat and one for the Phantom. After some trials however, I realize that I can't get a close enough video unless I'm flying 6 ft or less above the water. This can be very dangerous. I have good GPS in the area (12 satellites) so vertical stability shouldn't be a problem. My biggest worry is that I will accidently move the altitude adjustment when making sharp turns and find myself hitting the water. Does anyone have any ideas on how to add some safe guards? I thought about putting a mechanism on the left joystick that would require much more pressure to move the stick up/down but still allow free left/right movement. I can visualize how I would do this with a simple washer and rubber band. I would feel much better if I could set a minimum height. The home point for takeoff would be about 6 feet higher than the water level. It would be great if there were a safety feature that makes it stop or slow dramatically if the height ever goes below home point height. Any ideas?