WHAT'S THE WEIGHT FORWARD (WF) LINE? Weight forward lines have a section of the largest taper near the end of the line. This puts most of the mass at the end of the line allowing anglers to more easily and quickly load their rod for more casting power. This translates into longer casts. However, the fly presentation may not be as gentle as a double taper line. That¡¯s why weight forward line is best for beginner.