I hand quilted a quilt in one week, I guess it's not quite a double, will have to measure, but it's bigger than a lap. It was the first one I've ever quilted.
However, I really stayed with it. I used a BIG hoop and if I had trouble pulling needle through, used these little spring loaded pliers w/rubber handles. Also, I invested in a GOOD thimble from someone at Jax Quiltfest this year. It fits and my finger can breath. Also, It was just straight stitching, no curves. I think the amount of quilting has to be considered. This was nothing too intricate.