Random bit of information cluttering my brain. When playing tug of war, hold the rope with your thumbs pointed towards yourself. A trained professional can usually pull about 0.8-1.0x their body weight that way vs. about .5-.7x with thumbs away. Looped around a waist and the same person can get up to about 1.0-1.5x with cleats on turf. Obviously there is lots of variance for type and thickness of rope as well as footwear and surface but the general principal stands, hold the rope thumbs towards yourself. Source: I studied thrown rope rescues in swift water situations.