Here's the hand quilting hoop I love:
http://www.keepsakequilting.com/prod...PTOP-HOOP-.htm
The ball makes the hoop very easily to swivel the hoop to any angle or direction that will make stitching easier, and it's very easy to release and tighten the wing nuts for the position you want. The underneath hand is unobstructed, and the entire hoop sits in your lap.
There is a half-hoop adapater available for it too (makes stitching borders easier).