Scientific Anglers Sonar Leader – Floating
Imagine a world where you need to get a fly down to the fish, but all you have is a floating fly line. In that world, the perfect solution would be our SONAR Sinking Leaders. Luckily for you, we live in such a world. These 10′ leaders attach to the end of a fly line and can put your fly anywhere in the water column. With five different densities, each weighing in at 50 grains, you’ll be able to cover the surface to the depths. Ideal for single-handed lines as well as light double-handed lines, no matter the scenario, you can Get Down with SONAR.
Key Features:
- 7′ and 10′ floating and sinking leaders for use with double- and single-handed lines
- Built on 25-lb. monofilament
- Weight: 35 and 50 grains
- Welded loop on butt end
- SA ID for quick identification of individual leaders
| Feature | Detail |
|---|---|
| Length | 7′, 10′ |
| Material | 25-lb. monofilament |
| Weight | 35 grains, 50 grains |
| End Type | Welded loop |
| Identification | SA ID marking |
FAQ
What is the difference between floating and sinking leaders?
Floating leaders remain on the surface and are useful for targeting fish near the top of the water column. Sinking leaders allow you to place your fly deeper in the water, depending on the density selected. The SONAR leaders offer both options with five different densities to suit various fishing conditions.
What types of fly lines are compatible with these leaders?
These leaders are compatible with both single-handed and light double-handed fly lines. They attach directly to the end of the fly line to extend reach and control depth.
Are the leaders durable under regular use?
Yes, the leaders are built on 25-lb. monofilament and feature a welded loop for secure attachment. The construction is designed to withstand typical fishing conditions and repeated use.


Katherine King –
I’ve used the 10′ sinking leader in both still waters and streams. It helps me reach deeper fish without having to change lines. The 50-grain weight works well for most situations. Easy to attach and the SA ID makes it simple to track which leader I’m using.
Gabrielle Mackenzie –
The floating and sinking options are a game-changer for my fly fishing. I can now adjust depth quickly depending on the fish behavior. The welded loop stays secure even when casting hard.
Adam Mitchell –
Great value for the versatility. I use both 7′ and 10′ leaders depending on the situation. The 35-grain option is perfect for surface fishing, while the 50-grain goes deeper. Very reliable and easy to identify by the SA ID.