Also, I've been meaning to share this. It's a short video of me using our new Fransgard to fell a hillside oak tree.
I'd been wanting to fell the tree for years to improve our view a little, but it grew on the precipice of a steep slope and leaned heavily downhill. I didn't want to fell it downhill, because it contains some quality firewood and it would be quite a struggle to get the cordwood back up to the yard.
Not shown in the video is me climbing a ladder to attach the choker ~18' up on the stem, then taking tension on the line. I then notched the tree and plunge-cut it, leaving a thick hinge. Back cut it leaving just a small tag remaining. As I've posted before in this thread, I was a commercial logger when I was younger and routinely used this procedure with a JD 540B cable skidder.
I take the time to thoroughly clear my work area around the base of the tree before I begin anything else, including a planned and cleared escape route for if/when I have to get out of there in a hurry. For example, if the tension I had already put on the line was enough to pop the tag and send the tree over. That was not the case in this situation, but I was prepared for it.
A small bump from the winch was enough to pop the tag, then I continue to pull until it's about halfway down to help prevent the tree twisting from the downhill lean and shearing the hinge. First winch-assisted fell I've made with the Fransgard, and I'm very impressed with it's capabilities. Wish I'd bought one years ago.