So necessity being the Mother of invention , I put on the old thinking cap. I wanted a support structure that I would be able to use for a multitude of differnt signs, two sided, hanging, post mounted, etc.
I added the vertical post and an overhanging arm. This arm also extends over the sander side of the post and has a attachment point for counter balance as needed.
The way this works is I mount the sign to the disc then I can rotate it 360 degrees and work the signs from almost any angle.
This disc also has a higher position on the post above the slide bolt that locks into the disc holes.