If your multi has bad bearings, or slightly unbalanced props, you'll notice that the camera is shaken around quite a bit. This can ruin both the audio and the video.
This is what you need! It uses 3 of FliteTests Vibration dampening bobbins: to isolate the Mobius camera from the frame.
It uses a T-shaped bolt pattern 18x35mm, where 2 bolts are 18mm apart, and the third 35mm away, centered between the first. The top plate can be zip-tied to the rest of the assembly, or use velcro straps if you want a removable option. Just be sure it's tight, so you don't let it rattle. :)