I just use a good old clinch knot when possible.

If I'm tying up some beefy monofilament, I'll use the Rivers Inlet knot.

If I'm connecting together two pieces of monofilament, I'll use the Uni Knot.

On the rare occassions that I do use a braided line, it's the Polamar knot.

I think that about covered it.
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T.K. Paker