Specs for GoPro zipline
Step 1 - Get a bit of rope
Step 2 - Get a pulley from hardware store
Step 3 - Sticky tape GoPro to pulley
Step 4 - Tie rope to trees and you should know how to do the rest.
My mate got some good shots with fishing wire , a go-pro and a pulley , setting it up was the easy bit , actually timing the release so it got the action was another story...
i was just at highland last wednesday