I float my pieced top. This allows me to make adjustments easier. My Nolting tries to drift because I always start sewing on the right side moving to the left, as I am standing behind the machine. This pushes the quilt to the left. I take a lot of extra care to give it a fudge factor....maybe 1/4" before I start stitching. And I start off the right side of the quilt and stitch into the pattern. I also do a basting stitch along the outside edge down a bit and go from the bottom up to where the already quilted part is and the pattern starts. I do use mostly Pantographs. My free motion quilting leaves a lot to be desired. Every time I roll, I have to pull the right side back a bit. I have a good eye for keeping the quilting straight, but every once in a while, it just doesn't work out. I just go with it then.