The Mavic Pro is one of the most popular consumer drones around these days. If you are planning to fly it over water, you should consider investing in water landing legs for it. The Drone Fans 3D printed water landing gear kit lets you use empty bottles to land your Mavic Pro on water.
These landing legs let you use 4 large empty bottles to land your drone on water. You can get yours for under $30 at this time.