I'm not going to argue if you don't believe that pulling something over from 2 ft/ 30 percent higher doesn't make any difference to leveredge, keep believing it.
Good video, thanks.
About the lever arm discussion, there is a difference only if you pull from outside the boat, but if you are standing on the boat, there is no difference if your body is in the same position.
See it this way:
If you are outside (pulling from a motorboat), it's (almost) the same tension with different lever arms, so it does make a significant difference.
If you are on the boat, as you lower the attachment point, the tension gets higher because of force decomposition (to hold your weight). The tension increase compensates the lever arm reduction. (tends to infinity when lever arm tends to 0)
