Have you thought about using a Q snap frame? That's what I use and I love it.
I baste my quilt together, then use the Q snap, starting in the middle of the quilt and moving out to the edges as I go.
I can quilt while sitting in a comfy chair, listening to TV, put it away when not quilting. My back really likes it!
My Q snap is the 17" x 17". I have done several lap quilts and queen size. There are all sorts of sizes of Q snap and a floor model as well. I like the portability of the one I have.
http://www.qsnap.com/all_products.asp