I use the large size also. I do use painters tape on mine...not around the entire thing but basically on the corners. It really helps and is well worth the effort to remove the front part to change the bobbin. Another reason to just put tape on small areas. After a couple of uses I do rinse off the underside with water so it keeps clean to hold in place. I thought it was expensive but I like it. It is still important for there not to be a lot of drag on your quilts. I have a recessed machine in a large Horn table but I still bunch up my quilt top around my machine. Hope this helps