Stage Zero extension experiment - GoPro goes underwater.

DP Stage Zero experiment with an extension bar to allow a GoPro Hero to track in and out of water for video and time-lapse applications.
The Aluminium channel is bolted to the Trolley and runs in two V pulleys attached to the rail. The current extension is 6ft long with a usable extension of around 5 feet. It took about 2 hrs to build, mostly taken up searching my scrap bin for material to mount the pulleys.
The underwater shots are not too inspiring but my prime objective was to test the concept. The temperature was around Zero C, the light was starting to fade and I wanted a location I could park my car close to.
The set-up will hopefully carry my Canon 5D for video and time-lapse, not into the water I hasten to add, I will hopefully be able to post some footage using the latter camera and few stills of the temporary bearing/ pulley set-up. Here:

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