Recently I have put more effort into the sandwich by pulling the backing real taut and taping it to the table, smoothing the batting down very carefully and smoothing the top down. I pin approximately hand-width apart and double check the back to make sure I have no puckers. Then, I run a zigzag stitch around the outer edge of the top. I trim the excess down - but not to the edge - just in case something is off. Last quilt had NO puckers from the SID and it was easy to maneuver.