You can use both a monofilament, braid, and fluorocarbon mainline when fishing for bluegills. Mono and fluorocarbon lines are best used when fishing in clear water conditions, while braid is a solid choice for dark or stained water.
When spinning or jigging for walleye, your best choice of line is a 12-20lb braid. For trolling and slip bobber rigs, using a 6-14lb monofilament mainline is recommended.
Both braid and monofilament are great choices when it comes to picking your mainline for pike fishing. Braid is the perfect pick when spin fishing or fishing with dead baits, while mono is your number one choice for live bait fishing and trolling for pike.