How's your pinch strength? If you want it to be like this, then try working up to it with the fabled pinch traverse.

The classic incarnation of this problem is at Trumansburg. Here, you start at one end (next to the balance beam) of the gym and walk your way across to the other end (at the top of the corkscrew slide). Your feet can go on anything--even something that kids are supposed to step on, but your hands should only pinch the sides of the vertical boards. Remember not to use the boards as a sidepull, and you're allowed to pinch the horizontal board at the lip of the roof. (You'll figure it out, I think.) If that's too easy, force yourself to use every handhold, and lean back as much as possible.

If that's too easy, then you're amazing.

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