I've always been afraid to fly over water with my Inspire 1.  Many other Quadcopter Pilots have recommended the "Getter Back Rod Recovery System" which is water activated.  When submerged in water, the Getter Back will deploy a float attached to 100 feet of kevlar monofilament line.  Getter Back claims 10 pound strength line.

But where would one attach said device?  Even tho it weighs less than an ounce, where is a good location to mount it?!

I fly over water often, geterbackless so to speak. I don't calibrate the compass or IMU and I don't have any problems flying all over the North Island. But if I had the sense to use one I'd put it underneath the battery.  But the chances of a crash are so rare.....   If you feel you need a geterback then you need a ballistic parachute ...but that might fail so you'd better get a pair.   Live, Fly, Crash occasionally, it's all good.

Here's a thread on Inspire Pilots: http://www.inspirepilots.com/thr ... rs.3991/#post-42737link

I put two on each inner arm pointing outwards.   Have yet to use it ;)