Thanks for the video and this looks very interesting but I have a few questions:
- How likely is it that the throw bag would get stuck somewhere up in the tree due to an errant throw or interfering branch?
- I think always girth hitching around the trunk makes a lot of sense, but even with a girth hitch could the branch break and if so, do you think the rope would slide down the tree or would the girth hitch alone hold it in place?
- How well does this method work with leaning trees?
- How well does this method work with trees that have many lower branches on them?
-I've had my throw bag get stuck once or twice, if you tie the correct knot it will come loose with a really good pull.
-For the girth hitch the rule of thumb that I got from the arborist's on Youtube was the size of your thigh, if it's that size or bigger than just the branch is ok, if it's smaller than you need to girth hitch around the tree. The rope will hold with just a girth hitch, much like your tether, the problem is getting the rope up there, you can go down that way, if you get up there and realize that branch isn't as strong as you thought, you can reposition the rope and I've done that before, can't remember why. Also, I've left climbing webbing wrapped around a tree with a locking carabiner, I think I wrapped 5 pulled 2, but 3-1 would also work. Also a screw link is better for that method.
-a leaning tree doesn't matter, you will just spin around a little while climbing it's annoying but not difficult or unsafe. \
-I struggle with a lot of branches getting your throw line in the right spot, a lot of the time with lots of branches it will require 2 perfect throws, which can be difficult, one over the branch you wanted, the second over the one below it and to the ground so that girth hitch doesn't grab multiple branches. I have climbed up like that with multiple branches girth hitched and then fixed the rope while in the tree, but that can be a pain and take time. The biggest issue is time spent throwing that darn bag, I feel like I'm pretty good at it now, but it can still take a few minutes, I would recommend doing it while post seasons scouting and leaving it up there. Oh some folks on here mentioned 50lb braided fishing line and a sling shot with lead weights, I haven't tried that yet, but you could probably get it done very quickly assuming you were accurate. I don't like the fishing line idea because I use the 550 cord to pull up my bow.
Sry that got rather lengthy, hope that helps.