The shape is going to make it tricky. It may be easier to mount something to the wall or back of your stand. Another option may be to use T-Slotted aluminum rails. Very easy to work with, a myriad of finishing ends and connecting fasteners, and they look nice. Google "T-Slotted Framing" and then look at the images. You can make almost anything with this stuff.
Another option may be to simply use a piece (or pieces) of conduit with a bend. We opted for this and it worked out great. Very inexpensive and once painted with the ends capped, it looks very nice.