I fly in all directions and note the speed of the phantom from each direction and use that info for how much it takes to get the bird back flying from that direction. I use the atti to find out where the wind is blowing. I reserve the atti for extra power getting back. One other important thing to remember with atti is you don’t get assisted breaking. I erroneously went from sport mode to atti thinking I was in p mode and almost lost the bird to an electric post 10 feet behind me.I use it to see the wind speed. Don't want to use half a battery going down wind and then cant get home.