I have used the jumbo ric rac before and did a tiny zigzag down both sides. But my ric rac was not as much as yours, just around the inside of the border on a baby quilt. I can't remember if I used a walking foot or not. It was a pain, but I wanted it on there securely and, like you, I didn't want it to curl up. It also made an interesting pattern on the back. Unfortunately, I let that quilt get away from me without ever taking a photo.