and backing capacity, optimizing the design for the long runs of powerful ocean game fish. To prevent corrosion, saltwater fly reels often use aerospace aluminum frames and spools, electroplated and/or stainless steel components, with sealed and waterproof bearing and drive mechanisms. Fly reel operation Fly reels are normally manual, single-action designs. Rotating a handle on the side of the reel rotates the spool which retrieves the line, usually at a 1:1 ratio (i.e., one complete revolution of the handle equals one revolution of the spool). Fly reels are one of the simplest reels and have far fewer parts than a spinning reel. The larger the fish the more important the reel becomes. On the outside of the reel there are two levels of knobs these are the spool release and the drag adjustment. Fly reel drag systems Fly-reel drag systems have two purposes. One, they prevent spool overrun when stripping line from the reel while casting, and two, to tire out running fish by exerting pressure on the line that runs in the opposite direction. There are four main drag systems that are used with the fly reel. These are the ratchet-and-pawl, caliper drags, disc drags, and center-line drags. The ratchet-and-pawl drag clicks automatically while the spool is spinning. The caliper drag causes the calipers to brush up against the reel spool. A disc drag is when pressure is applied on the plates which then applies pressure on the spool. Center-line drags also known as the best kind of drag because the pressure is directly on the spool close to the axis of rotation. Sidecast reel The sidecast reel takes elements of the design of the centrepin reel, but adds a bracket that allows the reel to be rotated 90° for casting and then returned to the original position to retrieve line. In the casting position, the spool face is perpendicular to the rod and the axle is parallel, and the line is free to slide off the side of the spool. The advantage of such design is that the reel is direct-driven, and during casting the line release is as smooth as that of a spinning reel, but it does require an extra hand movement to start reeling. Sidecast reels are popular with anglers in Australia for all forms of freshwater and saltwater fishing. Most common is their use for surf fishing (beachcasting), or off the rocks, often with