When it comes to fishing gear, you may focus primarily on the rod itself because it is the most important piece of equipment you’ll need. However, it won’t work correctly without the right line. The fly line is what you will cast from the rod to catch the fish.

This product review will help you understand more about the Scientific Anglers Fly Line and who should use it. Though we think this is an excellent product, we do offer an alternative at the end.

Scientific Anglers Fly Line

Scientific Anglers is a company that specializes in a variety of products relating to fly fishing. It was founded in 1945 and has its headquarters in Midland, MI. Since there are so many items available, it’s easy for many enthusiasts to find what they need.

The company focuses primarily on what’s tried-and-true while still revolutionizing the products it sells. With industry and customer demands changing, this hasn’t been easy. However, it ensures that each product is made correctly.

Who Is This Product For?

Mostly, this fly line is used by anyone who catches fish using the fly-fishing method. This is an angling technique that uses lightweight lures called artificial flies. You cast it using a reel, fly rod, and a specialty weighted line.

The flies are often in the shape of food organisms, such as baitfish or invertebrates. This product is designed for use in salt and freshwater settings.

What’s Included?

If you order this fly line, you get one box. Inside the box is an amber- or willow-colored line. There are a variety of sizes available, so you must pick the right size when ordering.

Overview of the Features


When it comes to purchasing a fly line, you may not realize what all is involved. With this brand, the core is made of a hollow, braided multifilament. This makes it more suitable for any weather conditions and is more supple, as well.

Of course, the coating on the line is also important. The AST (Advanced Shooting Technology) is a slickness additive that’s built into the product so that it lasts longer. There are also micro-balloons, which are applied based on the type of line. This protects the density of a floating line.

You’ll find that the overall length of the product is about 90 feet. It’s designed to fit on the reel correctly without being too large to slip off.

Fly Line Weights

The “size” of the fly line is called the weight. This company offers six different options, ranging from 110 grains up to 224 grains. They also vary from WF3 to WF8.

Often, you’ll find that the weight is commonly referred to in F3, F4, F5, and so on. It’s designed to help you figure out the one you need based on the species you’re trying to catch. For example, trout and panfish use a 4/5/6 taper. Bass requires a 7/8/9 taper, while pike requires an 8/9/10 taper.

How to Install a Fly Line

The first thing you need to do when installing your fly line is to have the right backing, fly reel, the line, and a leader. Ensure that the fly reel is set to the right dexterity. Many times, reels can be set left- or right-handed.

You’ll need to attach some backing to the reel using an arbor knot. The knot is quite simple and features two overhand knots. Just wrap the backing around the reel’s arbor and tie a simple overhand knot around it.

Then, you’ll tie a small knot at the end of the backing line so that it doesn’t slip off. Once that is complete, you can spool on as much of the backing that you’ll need. This should be included in the reel manual. Generally, smaller reels of 50 yards are suitable, though you can find 100 yards. Since fly lines come in different diameters, the backing amount is often a guessing game.

Step 1: Attach Backing to Fly Line

Now that the backing is attached to the reel, it’s time to tie an Albright knot to connect both of the lines. It’s fairly easy to do, but this short instructional video will help you the first few times. Often, while wrapping, less is more, so do it for only about five or six times.

Even with large fish, six times is often enough. However, you can wrap the backing up to 10 times if you feel that it is warranted.

Step 2: Wind the Line Onto the Reel

Once you’ve got the backing attached to your fly line, you will need to put the fishing line onto the reel. This will depend on whether your line came with a loop or is just a cut end. We will focus on the cut-end version, as the Scientific Anglers Fly Line doesn’t contain a loop.

Since you don’t have a loop in the fly line, you will need to create one. Just take the end and make a loop about the same size as the leader. Tie your new loop using any knot you like. Next, place your leader loop over the fly line loop. You’ll then run the tip of the leader through the fly line loop.

Step 3: Adding the Leader

To add the leader to the fly line, you can tie either a nail knot or an Albright knot. We recommend the nail knot because it’s slightly slimmer and will slide through your guides. However, the Albright knot is easier to complete, so it might be best to start with that if you are just beginning.


Though we think that this fly line is ideal, we wanted to give you another product to consider. The Piscifun Sword Fly Line comes in a variety of colors and sizes, starting at WF1 and going to WF10.


This fly line has a larger diameter and has a longer head, so it’s easier to cast. Plus, it also features a braided core and a slickness additive. You’ll also find that it’s less expensive. The downside is that the line is quite rough. Therefore, it might make it harder to cast with ease.


When it comes to fly fishing, you can’t do much without the fly line. In this review, we talked about the benefits of the product. We also focused on how to install the fly line onto your reel. Primarily, this product seems to be one of the best on the market right now. The manufacturer has been in the industry for many decades and focuses on innovation with quality, so you can be sure that you’re getting a quality line.