PolyDyne rocks IMO! Carl and I took down a big white oak a few weeks ago. I switched to 5/8" PolyDyne once I got down to the big wood. The biggest piece weighed 1650+# based on our calculations. Carl took 4 wraps on the bollard, planning to let it run VERY little, as we had concrete driveway and asphalt street below. He wound up only giving it about a foot, and the stretch in the Poly was perfect. Here's a couple of pics. The two biggest pieces are yet to be dropped. The last piece was 8 1/2' long, measured down from where I'm rigging the piece in the left photo. When the last piece swung down, it barely cleared the chunks at the base of the tree, slamming into the trunk. The trunk was ~20' tall, and the piece was 8 1/2'.....several feet of stretch. Makes for smoother rigging when applicable for sure.