Lately I am letting the quad to go as far as posible and engaging the rth mode when in out of range so to film some areas near my home. I'm using googleearth to take distance and plan waypoints to visit. Any advice against this? I know that always is better to have the quad at sight or at least by fpv but that will limit me to no more than about 500 to 600m. Going as far as posible get me almost a km from home. I have a phantom 2 vision non +. My fear is that it will not RTH.