I lost my Drift HD170 twice while practising infinity on my RR Matrix 16 paraglider.
The Drift HD170 is quite a rugged device because it survived 2 falls from 500 meter into a field where it stayed with the back popped open for 3 weeks. During those 3 weeks a very big storm with torrential rain for days passed over Whakatane, completely flooding the area. After the storm had passed and the sun had dried out the field it was mowed & bailed. After 3 weeks my mate found it back because he felt he drove over something on the quad bike while retrieving the lines for the next tow!
He gave me the cam, I popped back the battery, closed the lid and turned it on, expecting nothing much... but... the LCD came on, I tried record; EVERYTHING WORKED!
Used it that day again for recording!
A couple of weeks later I lost it again, but luckily found it back in the field after the flight. This time the SD card was gone, but we found it about a meter away from the cam. Since the video was not closed properly it was missing the Quicktime headers. I needed to use a repair program to restore the video; the result can be seen in this little video on Vimeo!
Get your Drift at http://kiwi-air.co.nz!