I have used the fusible batting. I tape the backing to the floor, add the fusible batting and then the top. I pin it all and also iron it while it's still on the floor. After the top side is all ironed, I iron the back. The fusible batting is not a permanent bond so it will come apart easily, so I leave the pins in place. I haven't had any puckers in the quilts I did like this. It works for me. The hardest part is being on the floor.