Personally, I don't like to spray baste the top to the batting when I'm quilting on my quilting machine. I find that the basting spray does not let the top shift as I quilt and roll and I end up with puckers quilted in. Also I don't like to "float" a top. I prefer to baste the quilt top to the batting and backing and then pin the quilt bottom to the bottom roller. I never have a pucker if I baste the sides as I quilt and roll, and when I reach about 10 inches from the bottom I unpin the top and baste it to the batting/backing. Just my way of doing it. And it works for me. Might not be for everyone.