Here is some pictures of the GoPro cameragimbal I have made for my Gaui.
It is a simple plate made of lexan which I have bent so that the camera fits. I mount this plate between the battery and the body of the quad using velcro on both sides. Since the battery is attached to the plate it dampens a lot of the vibrations that causes rolling shutter.

So here is a video I shot this weekend with this setup, and also some pics of the gimbal itself.

Fie from above (2 min 1 sec)

i give it 2 thumbs up bruv cheap simple works