Originally Posted by two isles
I talked to a guy from REI about this.
Hanging from boulders and rocks.
off the record, he told me to get a couple of pro nut stoppers.
you can slide them between the cracks of the boulders and hang from those.
(hope I did that right)
or you could use some small climbing rope, tie a knot the ends, stick that in the boulders and hang your hammock from there.
If you are going to buy climbing pro to hang from boulders, a set of Tricams would be far more versatile than a set of nuts. Tricams can be placed in two different ways - an "active" mode that uses torque to cam into the rock, which works in placements which flare outward, and a "passive" mode that will work pretty much the same way as those nuts, and is good for constricting placements like cracks and the like.
For the weight, I'd gladly go with the tricams. That said, I do carry my tricams when I go hammock camping sometimes, and so far I've never actually had an opportunity where using them made much sense.