I have found that even with using longer shafted pins and bending them a bit, so they are easier to stick through the quilt sandwich, the Pinmoors still fall off the pins. Then it's a poked finger or hand here and there until you stop to find the culprit and stick the Pinmoor back on the pin. If I'm fmq a small piece that doesn't need a lot of scrunching to get it through the machine, these work fine. They are faster to put in and remove than safety pins, even w/ a Kwik Clip tool. I do agree they are kind of pricey, but I got mine on sale.