I'm a guy who generally plays it "safe". I know LL isn't fully safe and if I was truly a safe guy I would stay far away from this, but my hatred of my height outweighs my fears. It seems no doctor truly endorses going past three inches/7 centimeters. So at 5'5" would getting the extra two inches be a good amount or would it be pointless? I figure with shoes+lifts I could be 5'9 and that is about average. Also would femur be a "safer" bet or tibia?