Awesome footage.
And yes it is incredible how a pissy little Drone can not only keep up with but then out speed and cross around in front of the bow.
Awesome footage. Other than providing some nice eye-candy, does the drone have another, more practical function? You could use it to check out the boat's trim, or inspect the sheaves at the top of the mast. I suspect the pro-sailers on these boats would have a very good idea about what was going on if things didn't "feel" right (or if the metrics didn't add up), but they might benefit from a different perspective.
More aerial goodness, this time from a helo. I'm surprised there aren't more kite boats. Where are all the tinkerers?