Fun! You wouldn't want to put this in the water at around $25,000AUD Battery life is also iffy - usually around 20min for drones not pulling weight .. so id say 5-10min..? 
You could get a pretty solid jetski for the price of that thing. Probably even a reasonable second hand wake boat...
I wonder if they will start building surf specific drones for towing guys in and stuff?
Yep tow out the back - let go and send it back for someone else...
There's a business set up... think popular surf spots :)
For those who want 2 hr plus drone uptime...here is a petrol version....
Wont be long before you can get fuel injected 350 chev drone ...
