I tried other mounts to add a Skadis board to the side of my printer, but they weren't sturdy! This results in the board moving too easily when tools are added/removed. I improved on other concepts by:
Note if using 3D-printed boards: If it doesn't print evenly (usually if there's warping, or if you haven't leveled or calibrated filament), then one end or corner of your board may be thicker or thinner than others. This may result in a loose or tight fit of the hooks. Looser causes the most problems in my experience. You have a couple of options in this case: