I have 5 of the 4 x 6 tables that I set up in my den. The most I have ever set up is 3. (I use these tables in craft shows). I center the backing on top of the tables, then my batting, then the quilt top. I start in the middle and pin them with the quilting safety pins. I pull the backing to straighten it as I pin. By the time I have it all pinned (I put the safety pins about 5 inches apart), it's straight on the back. I can't sit on the floor and we have dogs so I won't put it on the floor anyway. This seems to work really well for me.