The Opti Creek line could be deemed the nemesis of vigilant fish. The line is a development of the Opti Stream and has a somewhat shorter head for better feeling and presentation. You get the advantage over the fish. Not the other way around. The taper is refined for an even better presentation and is suited both for over and underhand-casts. Head length varies between 6.0-6.2m depending upon line class. For small running waters, this is the line you need.