Here is another drone that can automatically follow you and capture all the action. The Airdog ADII is a foldable drone with LIDAR and smart algorithms to avoid collision. It can capture surfing, skiing, biking, kiteboarding, and many other activities.
The ADII comes with a motion GPS tracker. The AirLeash allows you to make in-flight adjustments easily. You can program flight paths for the drone and use its various modes (follow, Circle, …) to get started.