kernmantle prusik rope access?
(That was 2011, it has been improved since then) Just shoot some fish line over the branches and tie your cordage to the fish line and pull your rope over the branches. This sling bow shoots arrows = to a 45 pound bow and with that you could hunt any game found in North America (don't try it on Grizzly Bears though ;) Plus, in addition to being multi-purpose, it is one very cool toy.
