Take this willow from last week, it had lost its top leaving only a couple of biggish side branches that curled upwards, over a fence, so couldn't be dropped in one. Not practical to get a cherry picker in for it so had to be climbed.
I'm probably a good 1.5m above my anchor here, with enough rope in the system that I would probably deck out if I swung towards the tree, but by keeping my work positioning strop attached to the branch I'm walking out on I'm protected from a major swing and it at least offers a small amount of security should the branch fail.
By working single line it meant I could tie in around the broken stem and maintain constant friction on my hitch. Now some may say whats the point in this TIP (tie in point) when you'd hit the deck if anything were to fail, the point is that any roping point is better than none and this one gave me something to lean against when walking out on the branch, and by balancing the tension between that and my work positioning strop I could stand upright comfortably and securely, enabling me to safely remove the branch in manageable sections.