The thumb knot, whose principle is based on the nylon being trapped underneath itself, gives a great impression of reliability and solidity. This impression is well-founded, as famous fishing guides such as Julien Derozier have placed their trust in it.
Not only strong, this knot has the advantage of being quick and easy to make. Here's how:
Step 1
Pass the fluorocarbon or nylon through the eye of your hook, lure or swivel.

Step 2
Take your hook at the eye between your thumb and forefinger.

Step 3
Make a loop around your finger and the main thread.

Step 4
Repeat the operation 3 times.

Step 5
Slide the coils with your finger, making sure they don't overlap.

Step 6
Pass the free strand through the coils from bottom to top.

Step 7
Moisten and gradually tighten. The knot will gradually form and before it's fully tightened, slide it into the eye of your hook.

Step 8
Finish tightening your knot, trim the excess thread and your knot is now complete.

Benefits
- Very solid
- Very quick and easy to make
- Possible with large nylon diameters
Disadvantage
- Not recommended with braid