I do but I do not do Cal Kings in it. It is a ll you need though. I saw a man do a very large King Hawaiian quilt with a hoop. Gorgeous! He liked sitting on the floor. My current hoop, that I prefer, is made with that plastic, has a little ridge to keep the quilt top snug and has two hoops, one on the bottom and one on top.
This lifts the quilt and makes it easier to work under it. The plastic one is lasting me. I was going through wooden ones.
I take the back down, smooth the batting over it, smooth and spread the top over and hand baste. I also start from the center of the quilt and work my way around and out.