I don't think SID is really that hard to do myself...one of the few options I do have for my quilts. I use a walking foot and I have no problems. Long armers are using free motion to do it...harder I would think thank a footed machine. Give it a try...you might enjoy it and it is MUCH cheaper! Some people just use a decorative stitch over the ditch and then it isn't an issue to stay in that ditch.