GT Knot

The GT Knot, named after the Giant Trevally that inspired its creation, is one of the strongest line-to-line connections an angler can tie. Developed by Japanese offshore anglers who needed a knot capable of withstanding brutal runs from powerful pelagic species, the GT Knot retains nearly 100% of the line’s rated breaking strength when tied correctly. It works by forming a finger trap–style grip where the braided line wraps around the leader in a way that tightens under load rather than loosening. This knot is a serious tool for serious fishing — targeting tuna, GT, yellowtail, and other hard-fighting species where a failed knot means a lost fish of a lifetime.

How to Tie

1. Double over approximately 18 inches of the braided mainline to create a long bight (loop).
2. Thread the doubled braid through the eye formed at the tag end area of the leader, or simply lay the doubled braid alongside approximately 12 inches of the leader.
3. Hold the leader and the doubled braid loop together, pinching them at the point where they overlap.
4. Begin wrapping the leader tag end around the doubled braid loop. Make 30 to 40 tight, closely spaced wraps, working away from the pinch point.
5. After completing the wraps, fold the remaining braid loop back over all the wraps you just made.
6. Now make 15 to 20 additional wraps with the leader tag end over the folded braid loop and the previous wraps, working back toward the starting point.
7. Pass the leader tag end through the small remaining braid loop at the end.
8. Moisten everything thoroughly.
9. Hold the standing braid in one hand and the standing leader in the other. Pull slowly and steadily to seat the wraps. The braid loop should cinch down and lock the leader wraps in place.
10. Once fully tightened, trim the braid loop tag and the leader tag end close to the knot.

When to Use

• Giant Trevally fishing on tropical flats and reef edges where 100% knot strength is non-negotiable.
• Tuna popping and jigging with heavy braided mainline connected to thick monofilament or fluorocarbon shock leaders.
• Offshore trolling setups where the connection must withstand sudden, violent strikes at speed.
• Any big game application where line failure at the knot would mean losing a trophy-class fish.
• Heavy tackle bottom fishing for grouper, amberjack, and other powerful reef dwellers that need to be turned quickly.

Pro Tips

• The wrap count matters more with this knot than almost any other. With fewer than 30 initial wraps, the finger-trap effect is insufficient and the knot can pull out under extreme loads. Take the time to hit the full count.
• Use a smooth, flat surface to lay out the lines before wrapping if possible. On a boat deck, use a clipboard or tackle box lid as a work surface. Keeping the wraps neat during the tying process is critical to achieving the full strength rating.
• When cinching, apply pressure gradually over 15 to 20 seconds. Rapid cinching can cause the wraps to bunch unevenly, creating stress points that dramatically reduce knot strength.
• Test the finished knot by wrapping both standing lines around dowels or pliers and pulling hard. For heavy tackle applications, you should test close to the line’s rated breaking strength. If the knot survives, it’s ready for the fish.

Pros and Cons

Pros:

• Near 100% line strength retention, making it one of the strongest line-to-line connections available.
• The finger-trap design actually tightens under load, providing increasing grip as a fish pulls harder.
• Works across a wide range of line weights, from medium to extra-heavy tackle.
• No special tools required — just your hands and the line.

Cons:

• Time-consuming to tie, often taking 5 minutes or more even for experienced anglers.
• Requires a large amount of line to complete the numerous wraps, which can be wasteful.
• The finished knot is bulkier than slimmer alternatives like the FG Knot, which can affect casting distance.
• Steep learning curve with many steps where mistakes can occur, making it impractical for beginners or quick on-the-water retying.