Vortex Ring State sounds like the most likely culrprit. http://en.wikipedia.org/wiki/Vortex_ring_state
Also, I talked to DJI and they do not sell just the quad.
I had planned on doing something similar, seems to be the best combo of cheap and effective. Have you done water landings with this approach? I'm concerned about stability. I've got this picture in my head of the quad touching down and flipping over.
I feel that somewhere these is a physicist / oceanologist who can explain the weird air quality that exists just above water, which would likely explain how so many Phantoms end up in the bottom of a lake. It's like theres suddenly no air pressure and down she goes.
Which is why my Phantom now...
Just so we're all clear, the Vision2+ does not float. I was even lucky enough to get the help of the coast guard to try to find it, with no luck. Pretty sure it sunk fairly immediately. Was about 30 feet over the water, lost altitude quick and down she went.
So since you can pair any quad with...
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