I've been playing around with wind surfer for about 5 months on the Phantom 2 vision plus and the Phantom 3 advanced. Here I'll be talking about the P2v+. Most of the Wind surfers I have made myself . with empty pill bottles or vitamin bottles. That ever seems to work best for the size of the antenna. I'm not an electric engineer. I've talked to specials in the field and most of the wind surfers on the market are not correct, well let me say they will work better but it can do better. The idea is to have your antenna in the center of the wind surfer. As in the first picture. This just a stock drone and a mod antenna to the range extender I've been able to go out 6000ft multiple times and even 7000ft. Willis West Willis West 7k with this setup, The winder surfer on the controller was given to me. even with it I'm pushing over a 1.3 miles.