Estaz Stone by Big Y Fly Co.
The Estaz Stone is a fly designed to mimic stoneflies, which are naturally attractive to steelhead and trout. As juvenile steelhead show a strong interest in stones, this fly replicates that natural behavior to increase catch rates.
The bright thorax of the Estaz Stone serves as a key attractant, drawing in fish in both still and moving water. Its design closely follows the natural appearance of stoneflies, making it effective year-round.
| Feature | Description |
|---|---|
| Target Species | Steelhead, Trout |
| Season Availability | Year-round |
| Design Element | Bright thorax for attraction |
FAQ
Is the Estaz Stone suitable for use in cold water streams?
Yes, the Estaz Stone is effective in cold water streams due to its natural design and bright thorax, which attracts steelhead and trout.
Can this fly be used in both still and flowing water?
Yes, it performs well in both still and flowing water conditions, making it versatile for various fishing environments.
What makes the thorax of the Estaz Stone important?
The bright thorax acts as a visual attractant, mimicking the natural appearance of stoneflies and drawing fish into the fly.


Nicola Hudson –
I’ve used the Estaz Stone in several cold water streams and noticed a significant increase in strikes. The bright thorax really stands out and attracts fish even in low visibility. Works well for both steelhead and trout.
Paul McGrath –
The fly matches the natural look of stoneflies well. I caught a few trout on it during a spring outing. It’s a solid choice for year-round fishing.
Jasmine Paterson –
Great for both beginners and experienced anglers. The design is simple but effective. I’ve used it in different seasons and it performs consistently.