I spray baste mine in the garage on the wall that I tape some newspaper to. It holds together well, even over time. If I had to undo pins all the time, I would go crazy when FMQ. If I had to rip out basting stitches, I would mess up the thread or fabric. I FMQ on my vintage Singer 301s and the spray basting works for me. I tape the backing to the wall with many strips, starting at the corners, then middles, then middle of the middles and so on until it is taut. Then, I spray baste the batting, pat it into place, then spray the batting and put the top on, patting in place. If it is a large quilt, then I ask my husband (6'4") for help to hold it. I am very happy with this method as it enables me to get going and quilt.