I thought the same thing....there is some "built in" danger with that set up as it is. Even with that rope, I think it'd still be hard to wrestle that platform back up if you lost it. Plus, there is no letting out slack with that kong/ropman? on the tether. I'd definitely take your advice....30' of rope, madrock and quick link at a minimum. Ditch the tether, as is. Much safer.It’s working for him so that counts for something. I see two serious flaws for the way he is using it. First, using the mechanical prussik. Bad things can happen in a sudden drop. Second, no way to self rescue in his current set up. I know he ties a rope to the platform but that was pretty long. What if it drops and he tries to pull it up and it gets jammed and won’t move. No way to get down on the device he’s using.
Easy fix with a 30 foot piece of rope, a madrock safeguard, and a quick link.