Falling sights
Videos: Nice job on the cuts. Don't know how the redneck country whatever got these, they are way above his level. Anyway to answer the question of the gunning sights: learn how to use them because they are how a guy falls a tree accurately. Lets just talk about a tree that your bar reaches across and is straight up and down. That sight will put that tree right where your saw is gunned (assuming the cuts are clean). Now you need to get right down on it like it is the sight on a rifle. No glancing down on it as you stand above it. I mean on it like a gun sight (that is why it is called a gunning sight). When you go on your back cut and have your saw flipped, use the gunning sight again to get your holding wood even. This is for a tree that is straight up and down where you don't have to correct for lean or branch weight or other factors. I can discuss oversize trees or ones with lean/side weight if you want. Just trying to hit the basics.