You would think that designing, piecing, and quilting a work would be the hardest parts of creating an art quilt. For me, it is actually hanging the finished piece! I am still in search of the best approach. A desire to hang my two latest pieces in my home drove me back to the internet. I found a video by that described creating tabs for the back of the quilt.
The basic approach appealed to me. I could run a dowel through the tabs and either hang the piece with a single nail or wire/string attached at two points.
Making the tabs was pretty straightforward - create a 'mini-sleeve':
You then turn it inside out and attach it to the back of the art quilt.
I would guess that you could create significantly larger tabs and your tabs could serve the same purpose as a sleeve for a quilt show and then come home and be hung more as a picture.
In any event, I now have a few more of my art works hanging in our home. That feels good!