I always attach 2 of the getterback systems - it's not going to float the Phantom however depending on the depth of the water, at least the location of it can be found and perhaps something can be salvaged... (tough wood).
Home
I lost one of the early Parrot AR 2.0 drones to a flyaway, when it got out of wifi range and just drifted away downwind in the dusk of the evening, as I watched in horror, as it first drifted over the RR tracks, and then over the 10 lane freeway, and then disappeared behind an apartment building, likely landing in tall reeds in a riverbed on the other side of the street, all the while maintaining its above ground height of 100 feet, which avoided all obstacles. I spent weeks looking for it, because I wanted the SD card of the "
epic" flight over the freeway! The drone itself would have been ruined in several rainstorms shortly after. Long story short, after replacing it, I found out in a second flyaway, which I managed to recover, that the video recording
stops as soon as it flies out of WiFi range. So, even if I
had found it, nothing useful would have been on the SD card anyway! Now, with the P3P, I fly over that same flyaway route on a near daily basis, crossing the freeway to get to the saltwater bay on the other side, all in 4K video, instead of crappy 720p!
P3P rocks and always comes home!
Knock on wood...