This is a novice question but when you build a sign with multiple posts lined up in a configuration like these, how do you go about it? Do you only sink a couple posts and lag screw the rest together in a configuration similar to what I have rendered in the attached image, or is it done some other way? Also, I've seen some signs that look like dowel rods are driven through the posts, or are these just plugs to cap off lag screws/bolts?
In 4 years, I've yet to build a sign like this, but I would definitely like some insight into the method of construction as I think using more than 2 posts certainly has a much classier appearance.