What maintenance step is essential for keeping lines in good condition?

Cleaning all lines is crucial for maintaining their condition and ensuring they perform effectively. Over time, lines can accumulate dirt, salt, algae, and other debris that can weaken the fibers, leading to potential failure during use. Regular cleaning helps to remove this buildup and can also prevent mold and mildew from developing, which can cause deterioration.

The other options, while they may seem reasonable, don't necessarily contribute as effectively to the overall maintenance of lines. For instance, replacing lines every season may not be necessary if they are kept clean and are in good condition, meaning that the lifespan of the lines can be extended with proper care. Storing lines inside the boat may protect them from some environmental factors, but it doesn’t address the need for cleaning. Soaking lines in water before use might make them easier to handle, but it does not prevent the accumulation of contaminants or promote longevity.