I used one for a while, and usually it would stay, but occasionally it would shift and I'd sew thru it. I also tried one of those flexible plastic cutting boards at the dollar store and cut a hole in that, stuck it on w/double stick tape, and that worked for a short while too. Once I sewed it to the back of a quilt, it came off and now I don't use anything. It took forever to rip that sucker off the quilt! I seem to be doing well without it, so I won't bother replacing it for now.