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Scientific Anglers® Mastery Trout Fly Line


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Product Color
Line Weight
Quantity Price & availability

Dark Willow


Weight Forward

Dark Willow


Weight Forward

Dark Willow


Weight Forward


Weight Forward

  • Front taper
  • Ideal for presenting dry flies
  • Great all-around line
  • Specailly coated for suppleness
Scientific Anglers' Mastery Trout Fly Line is simply the best choice when challenging a beautiful rainbow or brown trout. This front tapered line excels when presenting traditional dry flies, but is a great all-around line that is versatile enough for most trout flies. Equipped with a special coating that ensures the line remains supple and has virtually no memory, this willow colored Mastery Trout Fly Line is designed to perform in all weather.   
Rated 5 out of 5 by 3 reviewers.
Rated 5 out of 5 by Very Nice (after some break in time) WF-5-F on a 9' Med-Fast action 5W rod. Med-Large / fast river fishing for trout. Typically fish a 7-8' leader with a large stimulator (doubles as a strike indicator and attractor) and trail a nymph behind on a light tippet. Fished the line for a week (every day) before writing this review. The line: A little stiff at first but after several hours settled in to a very nice line. Very good control and turnover out to 60-70' (didn't try much longer than that in this situation). Handled a wide range of cast styles and situations with finesse (except for long barrel casts -- which is expected on a WF line). Light in the air but a little heavy in the water at the tip -- but manageable. Fished fairly heavy / rocky water for a week (plus I stepped on it a couple of times by accident) with no abrasion (by feel anyway) or cut marks in the line. Very durable and abrasion resistant. This is among my favorite WF lines now. It may be a bit overpriced but if you consider it is the most important piece of tackle in flyfishing and compare it to all the other stuff in flyfishing you use that is overpriced then it's not awful. June 23, 2013
Rated 5 out of 5 by IMO The Best Light Line Fly Line Available Fly lines are a highly subjective issue, but one thing is for sure; this is an awesome one! I've been looking for the perfect line to load my Sage SLT 3 wt, and had been less than satisfied with the performance I encountered paring this rod with the Rio Selective trout lines, including their newest. The Rio was fair on the SLT; just not quite what I wanted. I'm quite fond of both SA and Rio lines, but for a medium to medium-fast rod such as the SLT, I think the SA line beats it hands down. It loads and casts beautifully, rolls the leader out and gets me distance when I need it, lands softly for great dry fly or light nymph presentations and as far as I can tell, it's very durable. Time will tell there, but SA has been making fly lines a long time and has it down! I highly recommend this fly line for dry fly fishing, and on any medium-fast fly rod! October 23, 2009
Rated 5 out of 5 by Impressed I’m very impressed with this Mastery Trout Fly Line! I love a fly line that I can use in temperatures from 20 degrees to the upper 90’s without experiencing a drop in performance. I was hesitant to use this line during the summer in Missouri where the heat and humidity can cause fly line to wilt, but I’ve never had an issue with this line. The line floats high, casts great and is easy to see as well. February 17, 2009
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SA GPX Mastery line is 1/2 weight heavier to make casting easier on a fast action rod. Is Mastery Trout line similar or is it true weighted?
7 months ago
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Staff Answer
Hi, thank you for your inquiry. The Mastery Trout lines are "true to weight" and follow the AFFTA Industry Standards for line weights.
2 months, 3 weeks ago
 - Springfield, MO
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