So Just pick a couple studs and go at it, all the horror stories about walls pulling in with the tons of stress from the ropes/straps are just that. I am hammock poor and always wanted to try it but not much of a sheet rocker so passed on the ideal
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I actually put them in the celling a few inches from the wall. There was some stuff in the way on the wall.
I've heard the stories too. I'm not worried about it. I've had a sky chair hanging on my enclosed patio for years on one eyebolt being pulled straight down.
I can't see an eyebolt pulling out of the stud before something in the suspension system would break. No sheet rock work needed, find the center of the stud and drill your pilot hole, screw it in. No worries.