I also use spray basting but I tape the quilt back down to the floor then layer the batting and quilt top. Then I roll one half of the top and batting towards the center, (so you end up with two rolls at the center) I spray the wrong side of the backing, and the unroll the batting smoothing it as I unroll. I let it set for a few minutes and then do the same with the quilt top, then do the same for the other half of the quilt. I do use the help of my happy hubby because most of my quilts are full size to queen size. By the end our knees feel our age but I haven't had any issues with puckering. I want to try the school glue on my next quilt because the overspray makes for a lot of cleanup. Happy quilting everyone.