I have seen the drones that you program to follow you posted on Seabreeze before, but not sure this waterproof version has bobbed up yet. The waterproof remote housing is pretty cool too.

Pretty impressive at 0.57.
I wonder how it handles the wind??

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Way too slow for tracking windsurfing - ok for sports 0-35kph dependant on relative wind speed - they can cope with 35kph wind speed maximum.
I got in contact with the designers and they confirmed not suitable.

this might work: newatlas.com/yeair-hybrid-two-stroke-combustion-quadcopter-drone/37713/