Dock lines come in many different types. The result is very often confusion. If a dock line is less expensive, it is less expensive for a reason. When you are comparing the same size lines for different prices, chances are less money is buying you less strength, less durability or both. For a small boat, used once in a while, minimum quality and price may be all you need. For a large boat permanently docked in rough tidal waters, high quality and more costly line is required. You owe it to yourself to follow through or dock line pages and learn which lines are the best for your needs.