Sonar Stillwater Seamless Density
Double-Density Sinking Lines
The SONAR Stillwater Seamless Density lines are a unique departure from the traditional graduated density lines of years past. With a variety of double-density sinking rates and a smooth, seamless transition between each, the SONAR Stillwater Seamless Density lines provide straightline connections to subsurface flies, meaning you’re in control of the fly every second it’s in the water.
- Designed specifically for the demands of stillwater anglers
- Based on popular MPX taper
- Overweighted by two line weights for multiple flies and long leaders
- Features 10-foot and 20-foot textured hang markers
- Seamless Density technology provides a smooth transition between densities
| Feature | Detail |
|---|---|
| Line Type | Seamless Density |
| Sinking Rate | Double-density, variable sinking rates |
| Hang Markers | 10-foot and 20-foot textured markers |
| Weight Overload | Two line weights over the base |
| Taper Basis | MPX taper |
FAQ
What makes the Seamless Density technology different from traditional sinking lines?
The Seamless Density technology provides a smooth, uninterrupted transition between density zones, unlike traditional graduated lines that have abrupt changes. This results in more consistent sinking performance and better control over subsurface flies.
Is this line suitable for stillwater fishing?
Yes, it is specifically designed for stillwater anglers with consistent sinking performance and reliable control in calm water conditions.
What types of flies can be used with this line?
The overweighted design supports multiple flies and long leaders, making it ideal for using several flies in a single setup.




Frank Mills –
The line performs well in quiet lakes. The sinking is smooth and predictable, and the hang markers help me keep track of the line depth. I’ve used it with both nymphs and streamers and it holds up well.
Jane Smith –
Great for stillwater fishing. The seamless transition between densities makes it easier to control the fly depth. A bit heavier than expected, but that works for my setup.
Samantha Oliver –
I switched from a traditional tapered line and noticed a big improvement in fly control. The double-density sinking keeps the fly where I want it without sudden drops or tangles.