I don't keep track of hours, but I only spend about an hour a night hand quilting, and a little more time on the weekends. The quilt I'm finishing up now was started in December, 2009, and it's 85 inches square. I thought I was done, but I'm adding a little bit more hand quilting in the border.
As far as I'm concerned, it's quality time that I spend with myself. I listen to music or books on tape, or I plan the next quilt. I'm not in a rush to finish lots of quilts.