40+ Booby Basher Sinking Fly Line – Airflo
Designed for experienced fly anglers who can maintain a stable cast loop, the 40+ Booby Basher Sinking Fly Line delivers extended casting distance and rapid fly descent to depths of 30 feet or more.
Originally developed for long-range bank fishing on concrete bowl reservoirs in the UK, this line is engineered to sink quickly and efficiently. The head is 55 feet long and can be cut to match your rod length. For optimal use with a 7/8# rod, cut the line to approximately 40 feet.
Features a Di8 sink rate and includes an ultra-thin, ridged running line to minimize tangles. The high-visibility orange color helps spot fish takes.
| Specification | Details |
|---|---|
| Line Length (Head) | 55 feet |
| Recommended Cut Length | 40 feet (for 7/8# rod) |
| Sink Rate | Di8 |
| Running Line Type | Ultra thin, ridged |
| Color | Hi-vis orange |
| Total Line Length | 55 yards |
FAQ
What is the sink rate of the 40+ Booby Basher Sinking Fly Line?
The sink rate is Di8.
Can the line be cut to a specific length?
Yes, the 55-foot head can be cut to suit your rod, such as to 40 feet for a 7/8# rod.
Why is the running line ridged?
The ridged design helps reduce tangles during casting and retrieval.

Matt Russell –
This line performs well in deep water fishing. The orange color makes it easy to see when fish take. I cut it to 40 feet for my 7/8# rod and it casts smoothly with good depth control.
Michelle Oliver –
Great for long-range fishing on reservoirs. The sinking rate is consistent and the line doesn’t tangle easily. A bit harder to handle than standard lines, but worth it for distance.
Frank Randall –
Used it on a concrete bowl reservoir and the flies dropped quickly to 30 feet. The visibility helps with spotting strikes. Cut it to 40 feet and it works perfectly with my rod.