Most modern fishing reels, regardless of their style or type, are equipped with a drag or “slipping clutch” mechanism of some sort that allows line to be pulled from the reel’s spool under a pre-set tension. On a threadline or spinning reel, drag pressure is usually adjusted via a knob located on the front of the spool or (more rarely) under the rear of the reel’s body. Overheads and baitcasters either have a star wheel under the handle or a lever on the side of the reel for adjusting the drag, while sidecasts and centrepins typically feature a nut or star in the centre of the spool. This drag is intended to prevent the line from breaking should excessive force be placed upon it. Instead of snapping, line slips from the spool against the pre-set drag tension. When a large or powerful fish is hooked, it usually needs to be “played” using a combination of drag resistance and rod work. The term “playing a fish” means taking your time and bringing the fish in more slowly and smoothly while using the flex of the rod as a shock absorber. If necessary, you will also need to allow the hooked fish to “run”: in other words, to pull line from the spool against the reel’s pre-set drag or slipping clutch. This may happen many times during a fight with a strong adversary, especially on lighter line. A big, strong fish can easily pull the rod tip down and rip line off the spool against the resistance of the reel’s drag. However, if the drag has been set too tightly, the line can possibly snap, or the hook might bend or straighten and rip out of the fish’s mouth. On the other hand, if the drag...