I guess there’s a video on the site that doesn’t come up for me. But when I saw the word “mini” it kind of threw the whole thing up in the air. Until you do it with the full-sized rocks it seems like you can’t really say what works and what doesn’t.
Try again to get a look at the video. I don’t know how big the stonehenge blocks are, but wally’s blocks are not “mini.” They’re 11 feet long and he’s erecting them with a crew of one.
Really quite clever.