It looks like you’re referring to a Scientific Anglers Sinking Fly Line in Green with a Partial Spoil (likely meaning partial sinking or a sinking tip). Here’s what I can tell you about this type of fly line:
Scientific Anglers Sinking Fly Line (Green, Partial Spoil/Sinking)
1. Type:
– This is likely a sinking tip or intermediate/sink-tip line, meaning only part of the line sinks while the rest floats or suspends.

– Alternatively, “Partial Spoil” could refer to a line that has been partially deteriorated (e.g., used or stored improperly), but this is less likely unless it’s a second-hand product.
2. Key Features:
– Color: Green (common for sinking lines to blend into water).
– Sink Rate: If partial sinking, it may have a Type III (slow sink) or Type VI (fast sink) tip section.
– Core: Likely a braided or coated core for durability.
– Taper: May have a weight-forward (WF) taper for better casting.
3. Best Uses:
– Streamers & Wet Flies: Ideal for getting flies down in currents.
– Deep Pools & Rivers: Sinking tips help reach fish holding deep.
– Stillwater Fishing: Useful for lake trout, bass, or pike.
4. Potential Issues if “Spoiled”:
– If the line is deteriorated, it may have cracks, reduced buoyancy/sink rate, or poor casting performance.
– Check for coating damage, memory coils, or stiffness.
Recommendations
– If buying used, inspect for cracks or brittleness.
– If new, confirm the exact sink rate (e.g., 1.5–6 inches per second).
– Pair with a suitable rod (e.g., 6–9 weight, depending on application).
Would you like help identifying the exact model or troubleshooting issues with the line?