bought one a long time ago....when I thought curves were difficult.....worked ok, but in my mind I had to "tackle" those curves with a regular foot, so persistently I practiced, read, then thankfully videos were available and now I don't even bother taking out that foot, just pedal along. For an easier way to get used to curves, rather than drunkards path, I did a king size with Back Porch templates and nice large curves...easy peasy....