I starch the backing REALLY WELL, that way it's stiff enough to resist puckers. I don't really notice a difference in spraying or pinning. If you are spraying, don't fold the quilt until after it's quilted. Too much activity will loosen the bond. If you need to put it away for a while, roll it up instead. Once you use the spray a few times you will find the best format to suit your needs.