Four parameters must be taken in consideration when choosing a fishing line: stretch, linear tensile strength and strength on the knot, limpness and co lour.
Braided or monofilament?
Braided lines have virtually no stretching capacity. On one hand, this has the great advantage. When you are fishing at greater depths you always maintain direct contact with the bait. On the other hand, when you are fishing with the light power rods you must adjust the drag more softly than when using monofilament lines of the same breaking strength. Braded lines are 3 – 4 times stronger than monofilament lines of the same diameter. They are perfect for sea and surf fishing. If you use braided line for stripers, keep in mind that these super lines have almost zero stretch; you'll need to compensate by using softer-action rods than you'd normally use with mono.
Monofilament lines have possibility to be stretched and this is not so bad, if it small enough. Stretching of the line provides an extra cushion in fighting with the fish. Modern technologies make available to produce monofilament lines with little stretch. Berkley and Ande lines are perfect samples.
Linear tensile strength and strength on the knot
Usually line breaks at the knot. The strength of the knotted line is decreased. The reason is folding damages of the outside molecular level,
Limp line does not form stiff coils that rub the guides. A stiff line has a harder finish and is not so vulnerable when fishing in weeds or rocks that scuff the line.
Most of anglers use clear, silver or green line when fishing in clear water.