Spin casting hooks are usually attached to artificial lures, although natural bait is sometimes used. Weighted spoons are popular, which spin in the water as they are reeled back to the angler, creating a flashing pattern underwater that attracts fish. Swivels are usually used to prevent the line from spinning and twisting.
Most spin casting involves monofilament line, with the thickness of the line varying depending on species and location. Fluorocarbon line, which is almost invisible underwater, is sometimes chosen for fishing in clear waters. Braided line, which is stronger and resists breaking, is often used for bottom fishing where rocks are likely to be encountered by the line, but the thickness of the line is visible to fish in clear waters.
Spin casting rods are usually equally flexible along the entire length of the rod, to make casting easier and more responsive, especially when using light lines and lures.
Spinning reels are designed to allow for easy casting. The line comes out in coils, perpendicular to how it’s wound around the spool, and the spool itself does not need to revolve to let out the line. When the angler reels the line back in, a mechanism called the “bail” winds the line back around the spool again – the bail literally “spins” the line back on the spool. In “open” spool spinning reels, this is very easy to see, but “closed” reels are covered. Closed reels are usually more popular with beginning anglers. Spinning reels are mounted below the fishing rod.