No sound, but your basic conclusion is correct. The "trick" to the method is that you use long lines, tied at the front to the dock, and run to the BACK of the boat, lines from the front of the boat are tied to pilings or dock at the back of the boat, so you have lines of boat length plus whatever you need to reach the attachment points. The lines are tied without much slack, thus keeping the boat centered in the slip as the tide rises and falls. The stretch in the 3 strand nylon takes care of the rise and fall of the tide. Once you use the lines this way, don't use them for another storm, as the stretching action weakens them. But this works, I saw a lot of boats tied this way that survived Katrina (including my current boat) , and a lot of others that were tied other ways that did not. Chafe protection where the line rubs on the boat is very important, also.