windsurfer

I am thinking to get a Mavic Air - and my goal is to do some general hobbyist photos, and some video of Windsurfing and Kitesurfing. A few questions; 1) I assume that obstacle avoidance would not detect things like the cords in a kitesurfing set of lines? 2) How much practice time is required...

ive seen some video of folks losing signal at about a mile out due to trees and such which is perfectly acceptable. With my P3P I lost connection in one direction specifically and I popped on the windsurfers and problem solved. Do the P3 windsurfers fit on the Mavic antenna? See I don't know...