My quilts are quilted by haqnd. So, I use 1" X 2" X 8' boards (4 of them) with denim or sturdy fabric attached with tacks or small nails and 4 C clamps. Have a set of4 old chairs that I place the boards in a square and secure with the C clamps. To these I pin the backing and spray, place batting and spray and place top and pin all again to boards. I have used this method over 50 yrs. It works for me.