I have one that I pull out on occasion. Not an everyday tool, but one that I am glad I have. It is SLOW to set up, & slow to pull, but it has saved me on many occasions when pulling a leaner and I couldn't use the truck. I've never used it to raise limbs becasue I think it is too slow, but I have heard that others use it like that.
It says to use 1/2 3strand, and that really works best, but I have also used 1/2 dbl braid ---bunches up the outer, no good.
and have used it on arborplex quite a bit. Arborplex works very well on it. The good thing about it is that I doubt that you will ever snap a rope with it because it will allow the rope to start slipping when it gets overloaded.
Right now the bottom frame of mine is bent, not sure how that happened. This thread reminded me so I called them told them what was bent (ratchet guard) and they are sending me a new one for free, I don't even have to pay shipping!! That is a good company!!! ---The thing is really built rock solid, I have no idea how I bent this?? Go buy one, use it once and it has paid for itself, not too hard at $60.00.
Greg