Finally had some free time this weekend from my crazy work schedule to fab up this prototype I have been rolling around in my head. It was Rock solid once it locked down with a Whoopie Sling (used bright green only for pictures). Even when side loaded on this small diameter tree, it literally did not budge. Those are size 13 mud masher's and I'm 205lbs for reference. Gotta make a few tweaks to the location of the hooks sling attaches to and try to shave the weight a little on the next one (3.1lbs with rope). I think I can get some where between 2 to 2.5lbs. All in all pretty pleased with the 1st prototype.