Current tracking baseline. No price change recorded.
Since 16 October 2026
Scientific Anglers Mastery Trout GP Floating Fly Line WF
Lowest in-stock price
£79.90
from Fishing Tackle & Bait
Compared across 1 shop, with 1 currently in stock
Product Information
The Scientific Anglers Mastery Trout GP is a floating weight-forward fly line with the tapered belly used on Infinity and longer front and rear tapers. Its quarter-size-heavy profile is intended for trout fishing with dries, nymphs and smaller streamers.
The design favours finesse while remaining an all-round trout line.
A braided multifilament core sits beneath the coating. Scientific Anglers' AST additive adds slickness and durability, while SA Line ID makes the line easier to identify. Welded loops provide a straightforward connection for leaders and backing.
It comes in WF-3, WF-4, WF-5, WF-6 and WF-7 weights. Every line is 90ft long, with head lengths from 49.5ft on the WF-3 and WF-4 to 52ft on the WF-7. The first 30ft weighs from 105 grains on the WF-3 to 195 grains on the WF-7.
Features and Specifications
| Feature | Details |
|---|---|
| Line weights | WF-3, WF-4, WF-5, WF-6 and WF-7 |
| Total length | 90ft |
| Head length | 49.5ft to 52ft |
| Weight in first 30ft | 105 to 195 grains |
| Line profile | Floating weight-forward |
| Taper | Infinity belly with longer front and rear tapers |
| Core | Braided multifilament |
| AST additive | Adds slickness and durability |
| SA Line ID | Easy line identification |
| Welded loops | For leader changes and backing attachment |
Price History
Tracked shop prices over time.
Get a Price Drop Email
Confirm your email once, then watch other products on this device with one click.
Frequently Asked Questions
Which line weights does the Mastery Trout GP come in?
It comes in WF-3 through WF-7 weights.
How long is the Mastery Trout GP fly line?
Each line has a total length of 90ft.
What core does the Mastery Trout GP use?
The line uses a braided multifilament core.
Does the Mastery Trout GP have welded loops?
Yes, it has welded loops for leaders and backing.
What flies is the Mastery Trout GP intended for?
It is intended for dries, nymphs and smaller streamers.
Scientific Anglers Wet Cel Intermediate Clear Weight Forward Fly Line 
Scientific Anglers Air Cel Weight Forward Floating Fly Line 
Scientific Anglers Air Cel Orange Weight Forward Fly Line 
Airflo Sixth Sense 2 Sinking Fly Line WF 