Hi Mr. Reber,
I use what they call a Double Uni knot or an Albright knot. I also like to double my braided line with a Bimini Twist or a Spider Hitch.
The reason I double the braided line is because it is so thin, it can actually cut through a leader if you have a big fish with a tight drag or if your fighting the fish for a long period. This will not only double the surface area of the braided line, but it will also double its pound strength. Example: the 80 lb braid you are using is now 160 lb. Doubling your braided line also gives you the extra safety of the braid getting cut, if it does the second row will hold onto the leader for you to land your fish.
Both the Double Uni knot and the Albright knot are true thin knots that slide parallel, not at a angle like a surgeons knot. which can cut through your leader easily.
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