The name of this knot should give you a clue. It has a unique sort of mechanical advantage. The Trucker’s Hitch allows you to tighten up a line. While the knot is a bit complex, it’s worth learning. It gives you the ability to tighten lines before you need to finally secure them. Think of trucker’s with shifting loads or other loads that need tarp coverings. The Trucker’s Hitch is perfect for those instances.