You'll most often choose between nylon and fluorocarbon. Plastic materials usually give more elasticity and can be comfortable in surface presentations. Fluorocarbon is denser, sinks faster and, as a rule, withstands abrasion better, so it is often used below the surface. These are common properties; The specific hardness and strength are always checked against the manufacturer's data.
Wear several consecutive sizes to restore the leader's gradual narrowing, rather than tying a much finer section abruptly. The length of the added tippet affects the fly's inversion and control. Do a test pass in a clean place and change only one parameter. If the leader falls in a cluster, the cause may be in the length, diameter, knot or too heavy fly.
Each knot and each injury reduces practical strength. Wet and tighten the knot evenly, cut clean the end and check the connection with a gradual load. After contact with a stone or branch, draw the tiptee carefully between the fingers and change the rubbed area. Keep the rollers from strong sun and heating, note the material and size and do not rely on an unknown old residue for important rig. Record nodes that work reliably with any material.
To complement the system compare Muharnic fishing, fishing lines and leaders, Hooks, Instruments and the boxes and the binders.