Some might know, I have ditched my plane (again ) into liquid - a small river that looks much more like a sewer. Being a second timer, many things were prepared for the ditch. When I recued my plane, the gopro fell off and spend a good 2 minutes 1 meter underwater ( sh!t ). No, I wasn´t using the original GOPRO casing and YES the gopro is fine.
How can you prepare your gopro for a ditch?
Just TAPE ALL of the seams on your camera. Including buttons, LCD, mic, USB port, video ports, EVERYTHING.
At the time of the ditch, I even had the USB and video out ports open, of course a small amount of water made it in thru those, but wasn´t enough to spoil my parade.
No water made it in the lens housing, but one can also use plastidip or silicone rubber to isolate that spot. ( will do also )
I removed all the tape to open it up but will do it again and post a pic later.
This image was some moments before the dip... Luckily, the battery just died seconds after this shot.