Back a few years ago (closer to 5 or 6 seasons), when I still used monofilaments, I use to change out a cast's length of line ever few weeks. I'd join the new line to the base fill with a blood knot. Especially with the lighter pound tests. That is one of the reasons that I've switched to braid. Now I can fish the same line for several seasons with no problems, or worries. With no thought to wear or line twist.
I use 2# test Fireline Crystal fused line for my main lines on several rigs, along with about a 3' section of fluorocarbon for the leader (4# test). I join these two lines with the Alberto knot, which has also proven itself over many seasons of hard use. This combination is very trouble free and more than strong enough to handle a lot of fish each season.
If you do not change baits frequently, I would just tie your lure/bait on without a snap of any kind. Use the Trilene knot, as the double loop on the hook eye resists breakage much more effectively than the single loop knot most others have.
Now I also use size #2 "snap hooks" on the end of my leader (Netcraft) in order to facilitate switching baits and allowing a freer movement of the bait in the water. These tiny hooks can float a dry fly and I've never had one fail on me thus far. Whatever you do, I would not recommend the use a "snap swivel" combination. Way too much hardware, in my opinion.
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