The difference between a loop knot and a fixed knot is about one millimeter of space between the line and the hook eye — but that space can be the difference between a lure that performs as designed and one that swims stiffly.
The Mechanical Difference
When a crankbait, jerkbait, or topwater lure is attached with a fixed knot (Palomar, Improved Clinch, Uni), the line and hook eye are locked together. The force from retrieve and rod movement is applied at a fixed angle.
The lure’s bill, lip, or body was designed to interact with water at a specific angle. A fixed knot changes that angle based on how the knot seats against the eye.
With a loop knot: The lure hangs on the loop and can rotate 360 degrees. It finds its natural swimming angle on its own, restores the designed action, and responds more freely to changes in retrieve speed and direction.
Lures That Benefit Most From Loop Knots
| Lure Type | Benefit From Loop Knot |
|---|---|
| Crankbaits (diving) | Freer wobble, better action on slow retrieve |
| Jerkbaits | More erratic, sharper darts on pauses |
| Topwater (walking baits) | Better walk-the-dog action |
| Topwater (poppers) | Cleaner pop and more free swing |
| Soft swimbaits on jig head | Natural tail kick improves |
| Topwater frogs | More lifelike leg kick |
| Saltwater jigs | Freer fall and swing on the drop |
Lures Where a Fixed Knot Is Correct
| Lure Type | Why Fixed Knot Works Better |
|---|---|
| Jigs (weedless, football, finesse) | The line pulls directly from the eye — a loop changes jig presentation angle negatively |
| Texas rig worm hooks | Fixed connection is intentional for weedless sliding |
| Carolina rig hooks | Fixed connection to leader |
| Lures with snap swivels already attached | The snap itself provides the loop function |
| Lures with a split ring on the eye | The split ring already gives the lure freedom — a loop knot would be redundant |
The Main Loop Knots
Non-Slip Mono Loop (Kreh Loop)
Strength: 95–100% | Best for: All lure types, especially heavy line
Tying:
- Make an overhand knot in the line, leaving a 6-inch tag
- Pass the tag through the lure eye
- Pass the tag through the overhand knot (from the same side it exited)
- Wrap the tag 4 times around the mainline above the overhand knot
- Pass the tag back through the overhand knot (from the opposite side)
- Wet and tighten — the loop size is set by how far the lure is from the overhand knot before tightening
The number of wraps (step 4) varies with line weight: 6–8 wraps for 6–8lb, 5 wraps for 10–15lb, 4 wraps for 20–40lb.
Rapala Loop Knot
Strength: 90–95% | Best for: Rapala lures, beginners learning loop knots
Tying:
- Form an overhand knot 6 inches from the end
- Pass the tag through the lure eye
- Pass the tag back through the overhand loop
- Wrap the tag 3 times around the mainline (above the overhand)
- Pass the tag back through the overhand loop
- Tighten
Simpler than the Non-Slip Mono Loop; slightly lower strength on heavy line.
Loop Size
The loop should be small — 1/4 to 3/8 inch. A large loop allows the lure to swing too far on each movement, causing a tangled presentation. A small, tight loop just large enough for free movement is the target.
After tying, check: the lure should swing freely when the loop is moved — no binding against the knot. If the lure doesn’t move freely, the loop may have collapsed during tightening.
When to Test Loop vs Fixed
The best way to see the difference is in clear, shallow water. Tie the lure with a Palomar Knot and retrieve it slowly — watch the wobble. Retie with a loop knot and repeat. With crankbaits and jerkbaits, the difference in action is often visible immediately.