I use a Supreme slider and Machingers and have not had a problem with FMQ on minky backed quilts. My DSM is recessed in a sewing cabinet so doesn't hang up on edges. On larger quilts I have set up my ironing along side the cabinet to help support the weight. I don't know what your set-up is, just thought I'd share mine. I hope you can find a method that works for you, the kids love their minky backed quilts.