I live at the base of a very tall mountain. I like to use my Mavic to explore, but the 500m Max Altitude restriction is cramping my style. I know there are people crouched and ready to finger wag whenever someone talks about flying above 500m, but we all know that the actual FAA restriction is 400 ft above ground level. I've attached a frame grab that was taken at 500m and you can see that I'm definitely not anywhere close to 400 ft AGL. I'm wondering if I find a flat rock whether I could put down and reset the ground altitude. Not my first choice since a sudden gust could instantly create a Mavic-or-your-life mountain climbing decision. Any (worthwhile) suggestions?