Zipline catapult looks really fun, but also really complicated

A simple knot in a zipline is catapulting this group of attractive young people to new heights of photogenic fun. We're not 100 percent certain of what is going on here but the video is another captivating reminder from Devin Graham that all you need in this world is your bros, a zipline, waterskis, a waterproof camera strapped to the top of a helmet, a ski doo, a multi-story yacht-type houseboat, a waterslide off the side of your houseboat, several days off work and the great outdoors. That's all you really need. Oh, and editing software so you can put a video together and make everyone thoroughly jealous.

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