Drone Recovery:)

[Graham Lawrie]

A must have?
https://www.youtube.com/watch?v=ks8eWyZKMDo

[Derek]

Very cool!

[Lee]

Only problem, if the waters not deep enough to activate it, then you're stuffed.
I use this if flying over water.
http://www.water-buoy.com/

[pvolcko]

If the thing just works based on pressure differential, if you know you're flying over shallower waters, you could either prep it by assembling in a freezer or perhaps pressurizing it slightly so it will deploy at shallower depth. Or maybe mod the thing to have less strength in the friction fitting.

[Graham Lawrie]

It looks like an "O"-ring is the seal so you could also reduce the thickness so it releases at less pressure:)