I don't trust a sticky pad, even a 3m one so still looking for a mechanical fixing of some sort.
I saw the roll bar mounts and may go this way but would prefer something neater mounte on the top plate of the frame.
The plate the camera is fixed to in the box may even do if cut down slightly or I may cut out the suction mount and drill this.
I just find it surprising there is no fixed mount suitable for screwing to a flat surface other than sticky pads............
I am going to use it diving as well but with a second modified case and diferent mounts. The case for surface use is going to have the floaty door mod, not because there is any chance of finding if it falls off as speed but just in case it is accidentaly dropped overboard when mounting or similiar.