I used to use my dining table with leaves in- gave me 36x72 space. I went to Home Depot w/DH and got some of the big clamps like he uses for wood projects. Lay your backing down, centered with pins at the center, using length of table for width of your quilt. Smooth out and clamp on both sides, then lay batting, centered, and top, again centered. I then pin with large safety pins about 4-5 inches apart, working from the center out. You have to unclamp and slide the entire "sandwich" first one direction to continue pinning, then back the other way. If you take your time with smoothing and clamping, then flip to check the backing once it is all pinned, you should be good. May have to redo some of the pins, but usually it is out near the edges. I now have a top that DH made from a sheet of plywood that fits over my table-gives me a 4ft x8ft surface, still clamping and pinning.