All you need is the FG knot. Any knot that involves bending the leader line is ineffective—especially with fluorocarbon, which is stiff and difficult to bend cleanly. Even if you manage to tie such a knot, the braided line can end up cutting into the leader within the knot itself, significantly reducing its practical strength.
(Note: All knots reduce the maximum line strength to some extent, but the FG knot minimizes this loss better than most.)
An FG knot consists of two main parts: the grip section and the finishing knots that hold the FG structure in place.
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The grip is formed by wrapping the braid tightly around the leader. This is usually done in 8 to 20 wraps, depending on how secure you want the knot to be. In the video, this part is shown from 0:00 to 1:30.
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The second part involves finishing knots to lock everything in place. A common method is the AG chain, which is a series of alternating half-hitches (Left → Right → Left, and so on). The number of these is up to personal preference.
To finish, you can either:
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End with a Uni knot for extra security, or
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Skip the chain and go straight to the Uni knot, depending on your needs.
To attach your fluorocarbon or monofilament leader to a lure, you can use a Uni knot or an AG Chain knot—the latter is especially useful for metal jigs, particularly when targeting sharp-toothed species like barracuda, thanks to its added strength and flexibility.
Note: If you prefer to tie directly to the lure without using a fast snap, and want to leave a loose loop for better lure action, consider using a Rapala knot.(YES, THE Rapala!)
(Apologies for not being able to film the other knots—my camera setup isn’t ideal at the moment. However, you can easily find tutorials for them on YouTube.)
