Did you know you can stipple quilt with out dropping the feed dogs. I do it all the time, it gives me more control on where the quilt is going without it sliding every where and the stitches are better than when I drop the feed dogs. Try it out on something else first, but I would either sew around the blocks in a SID method and stipple then if you want THEN remove the other sewing if you want to. That way it wont have to be re-pinned.