@ the cop looking for a ball with blood on it. Of course he did find one. Her mouth would have had to already been bleeding to be able to transfer blood to the ball. It normally takes a second or two for blood to start flowing from wound.
I would get a spare clip for the otter box case, order some extra gopro mounts. Fab up a mount and zip tie the clip to the mount. It would be solid and hold the phone securely.