Scientific Anglers Sonar Trout Express Sink-Tip Fly Line
Sometimes the biggest trout live where back casts aren’t your best friend. Sonar Trout Express has a short, rear weighted head that excels at roll casting large streamers in tight spaces.
- Formulated with Advanced Shooting Technology
- Extended rear taper stabilizes longer casts
- SD Blend technology for the smoothest possible transition between densities
- Sink Rate: Floating running line, intermediate belly, Sink 5 tip
- Braided multifilament core
- SA ID – SA SONAR TROUT ###GR F I S5 (### = grain weight)
| Specification | Detail |
|---|---|
| Sink Rate | Floating running line, intermediate belly, Sink 5 tip |
| Core Type | Braided multifilament core |
| Technology | Advanced Shooting Technology, SD Blend |
| Head Design | Short, rear weighted head |
| Casting Performance | Optimized for roll casting large streamers in tight spaces |
FAQ
What makes the Sonar Trout Express line better for tight spaces?
The short, rear weighted head allows for better roll casting performance in confined areas, making it ideal for casting large streamers where back casts are difficult.
Does this line have a specific sink rate?
Yes, it features a floating running line with an intermediate belly and a Sink 5 tip, providing a balanced sink rate for effective trout presentations.
Is the core material durable and resistant to abrasion?
The line features a braided multifilament core, which offers good strength and durability under typical fishing conditions.

William Gray –
This line performs exceptionally well in tight spots like rocky streams. The roll casting is smooth and the sink rate matches what I need for larger trout. I’ve used it in several cold water streams and it holds up well.
Nicholas Edmunds –
Great for when I need to cast without back casts. The sink rate is consistent and the line doesn’t tangle easily. A bit more expensive than others, but worth it for the performance.
Theresa North –
I’ve switched from a traditional sink-tip line and noticed a big improvement in casting accuracy. The SD Blend technology makes the transition between sections very smooth.