
The Story
At first glance, most stillwater situations appear quite static, however, effectively fishing them often requires techniques that are anything but. Scientific Anglers's Sonar Stillwater Parabolic Sink Fly Line excels in stillwater environments, and as the name implies, this line features a unique parabolic sinking profile. This convex profile allows you to cover a midwater depth zone that most other lines simply won't allow. A line like no other, the Sonar Stillwater Parabolic Sink Fly Line is an effective way to place your flies in a zone that other lines just can't maintain.
Features
SA Line ID, AST, Sonar Sinking Technology, and Seamless Density - A line that sits in a league of its own, Scientific Anglers built this line to fish a specific zone in the water and outfitted it with all of the necessary tech to make success easily achievable. For quick line identification, Scientific Anglers equips these lines with their SA Line ID--gone are the days of spending an hour trying to remember which line matches your 5 weight rod. AST is Scientific Anglers Advanced Shooting Technology; this technology reduces friction to provide quick and easy shooting while repelling dirt and other water-based grimes. Scientific Anglers' Sonar Sinking Technology is a proprietary tungsten formulation that gets your line down quickly and keeps it there, while the addition of their Seamless Density Tech provides a smooth transition throughout the entirety of this line.
Uses
Nymphs and Streamers - The Sonar Stillwater Parabolic Sink Fly Line is a line designed to sink and fish stillwater environments. With its unique parabolic water profile, this line lends itself to effectively fishing nymphs and streamers. A great choice for pursuing the middle water column, this line will properly present a variety of different nymphs and streamers, and it's an especially effective choice for those who love to fish boatmen patterns.
Temp
Cold/Moderate - This isn't the line you'll want to choose when fishing super warm waters packed with panfish and bass, instead, it's the line you'll want to fish when pursuing trout in cold to moderate water temperatures. If you find yourself with this line in a warmer scenario, you'll notice that it begins to go limp.
Taper/Weight
More Mass Toward the Front of the Head - This line has a unique construction that makes it easy to fish the middle water column in stillwater situations. Scientific Anglers overweights this line by two line weights to make presenting multiple flies and long leaders nice and easy. To ensure that your line maintains its U-shaped profile in the water, Scientific Anglers integrates a Sink 3 running line, Sink 5 head, and Sink 3 Tip. An aggressive taper that casts effortlessly and a profile that keeps your fly where you want it, this line is a superb choice for a range of stillwater environments.
More Info
Best for: Freshwater, Stillwater, Trout
Loops: Front Loop (Leader to Fly Line Connection) and Back Loop (Backing to Fly Line Connection)
Sinking/Floating: Sinking
Other Resources
2020 Tropical Saltwater Fly Line Shootout & Buyer's Guide
Fly Line Temps: Tropical Vs. Coldwater
Freshwater Fly Line Shootout & Buyer's Guide

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
At first glance, most stillwater situations appear quite static, however, effectively fishing them often requires techniques that are anything but. Scientific Anglers's Sonar Stillwater Parabolic Sink Fly Line excels in stillwater environments, and as the name implies, this line features a unique parabolic sinking profile. This convex profile allows you to cover a midwater depth zone that most other lines simply won't allow. A line like no other, the Sonar Stillwater Parabolic Sink Fly Line is an effective way to place your flies in a zone that other lines just can't maintain.
Features
SA Line ID, AST, Sonar Sinking Technology, and Seamless Density - A line that sits in a league of its own, Scientific Anglers built this line to fish a specific zone in the water and outfitted it with all of the necessary tech to make success easily achievable. For quick line identification, Scientific Anglers equips these lines with their SA Line ID--gone are the days of spending an hour trying to remember which line matches your 5 weight rod. AST is Scientific Anglers Advanced Shooting Technology; this technology reduces friction to provide quick and easy shooting while repelling dirt and other water-based grimes. Scientific Anglers' Sonar Sinking Technology is a proprietary tungsten formulation that gets your line down quickly and keeps it there, while the addition of their Seamless Density Tech provides a smooth transition throughout the entirety of this line.
Uses
Nymphs and Streamers - The Sonar Stillwater Parabolic Sink Fly Line is a line designed to sink and fish stillwater environments. With its unique parabolic water profile, this line lends itself to effectively fishing nymphs and streamers. A great choice for pursuing the middle water column, this line will properly present a variety of different nymphs and streamers, and it's an especially effective choice for those who love to fish boatmen patterns.
Temp
Cold/Moderate - This isn't the line you'll want to choose when fishing super warm waters packed with panfish and bass, instead, it's the line you'll want to fish when pursuing trout in cold to moderate water temperatures. If you find yourself with this line in a warmer scenario, you'll notice that it begins to go limp.
Taper/Weight
More Mass Toward the Front of the Head - This line has a unique construction that makes it easy to fish the middle water column in stillwater situations. Scientific Anglers overweights this line by two line weights to make presenting multiple flies and long leaders nice and easy. To ensure that your line maintains its U-shaped profile in the water, Scientific Anglers integrates a Sink 3 running line, Sink 5 head, and Sink 3 Tip. An aggressive taper that casts effortlessly and a profile that keeps your fly where you want it, this line is a superb choice for a range of stillwater environments.
More Info
Best for: Freshwater, Stillwater, Trout
Loops: Front Loop (Leader to Fly Line Connection) and Back Loop (Backing to Fly Line Connection)
Sinking/Floating: Sinking
Other Resources
2020 Tropical Saltwater Fly Line Shootout & Buyer's Guide
Fly Line Temps: Tropical Vs. Coldwater
Freshwater Fly Line Shootout & Buyer's Guide
















