13:48 video, at the website.
Some of the models look good. Some seem to me, to be just elaborate in a way, to make them ineffective as a real barrier.
But there are plenty of people who know what works, and what will not work. They will select a good model.
Now, is the time. Select one, and get started.
If they wanted to make it effective they would top each section with a large diameter pipe. People will use ladders to top a regular wall. The pipe would provide a curved surface extending several feet beyond where the ladder rests and make it harder to scramble over the top.