My DDIL and I spray baste. We just spray basted a throw-size quilt. Her method is better than mine.
1. With batting down (we lay a king-size sheet over carpet) and backing on top, fold top back and spray halfway; press backing down and smooth completely; fold other half back and repeat.
2. Turn the batting and backing over with backing on top.
3. Lay quilt top down on top of backing; fold halfway back and spray; smooth top down; fold other half over and spray batting; lay top down and smooth flat.
4. We folded the back and batting over at the edges so that the edges were not sticky.
We have been using this method (have used Wal Mart brand Spray; Joanne spray; and I use 505.
No shifting or puckering. I have done an over-size twin on my domestic machine with no problems.
With spray, you may lift the fabric and reset if necessary and it will stick back down with no problem. Good luck.