I just got back home after doing a Motor bike trip to the top of Cape York. We did Frenchmans (very quickly on the bike), and I was wearing a GoPro 3+ Black. The whole time I was hoping it wouldnt get knocked off, because it could so easily get lost.
At the start of every Memory Card, I always record my name and address, and ask if anyone finds the camera that they post the camera back for a reward.