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I should mention fluorocarbon makes you pay through the nose. From what I see, it is not much better than mono. The only difference is fluoro sinks and mono floats, not that big a deal with the big baits you use on pike. The thing is you have to get "leader". The regular spools of mono and fluoro are soft to use on a reel, and are not nearly as bite resistant as the real leader material. Steel and mono are both cheap compared to fluoro. You have to remember, you constantly shorten mono by retying. Steel can last a whole season. I also prefer shorter leaders with steel. I use about 2' on a tip up, or 12" when casting. While mono i put about 6' on a tip up, and nearly 18" when casting. This is so I can re tie it.