I like my sliders. I have the two sizes.......one for my Bernina and one for my sit down Sweet Sixteen. I have always taped the smaller one down and have never had a problem keeping it in place. It is inconvenient to remove it to change the bobbin, but it is just part of the process. It's also inconvenient to run out of fabric, rip out a seam and stop to make lunch, but does it keep me from quilting?..........no!!