Scientific Anglers Mastery Great Lakes Switch

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Scientific Anglers has updated their packaging for most of their products. What you receive may not look exactly like what is reflected in the photos, but the changes are cosmetic and you may receive a box that is different. 

Designed with the Great Lakes anadromous angler in mind the Great Lakes Switch line has an aggressive taper designed to turn over large indicators and the heaviest flies. Intended for use with switch and spey rods with a long head for superior mendability.

  • Designed for use with switch and spey rods when targeting salmon and steelhead with indicators
  • Long head for superior mendability
  • Aggressive taper turns over the largest indicators and heaviest flies
  • Ideal line for boat or wade fishing
  • For use in cold and moderate climates
  • Braided multifilament core
  • SA MS GL SWTCH INDO WF X F – (X = line weight)

Taper Diagram


  • Cold - When fishing cold water streams and rivers, these lines are the optimal choice. They remain supple, refuse to coil, and outperform lines built for warmer climates.
  • Medium - Lines featuring this icon are excellent all-around lines for almost any climate. While they may turn limp in tropical conditions, these lines will perform well in moderate and cool climates.
  • Nymphs - Nymphs are tied to imitate aquatic insects that live underwater. This icon signifies a line designed to fish weighted nymphs for a variety of species.
  • Streamers - Streamers are sub-surface flies tied to imitate baitfish, leeches, and other sources of food that swim. Casting streamers can be a challenge, so lines marked with this icon provide added power to aid in their delivery.
  • Poppers / Big Dries - Casting large-bodied dry flies and poppers requires additional power in order to provide proper presentation. Lines with this icon are designed to handle larger dries and popper flies without any hiccups.
  • Indicator - An indicator is simply a float or bobber attached to a line that alerts anglers when a sub-surface fly has been taken by a fish. This icon signifies a line that has been designed with a longer rear taper, meant to help casting and mending.


6/7 (400 gr) 50.0’/15,2m 90’/27,4m 400gr/25,9gr
7/8 (500 gr) 50.0’/15,2m 90’/27,4m 500gr/32,4gr

* Grain weight for the first 30′