It's rather ironic, really. One can spend a great deal of time in search of that truly beautiful/cool/exceptional looking piece of wood to use as a mount. Only to find it and then find ones self completely at a loss -- dithering as to which plant will look best on said mount (because there are two or more that would each just look soooo neat on said mount) not to mention trying to decide WHICH side of the mount should be used as it has several very cool different viewing angles to it. *sigh*
Paul, you have a nice problem. Hang it so you can use any place, or several places, to mount the plant.
I wish I could grow mounted plants. I still have a couple mounted Bulbos which do OK but I had to pot several of mine which didn't do well mounted. I had big intentions and have quite a bit of cork bark sitting in my garage, waiting for me to get the courage to try again.