Applying Maximum Tension to the String Line

What happens here

With the first end of the string line securely anchored, take the loose end of the string (the part coming from the string dispenser or roll). Pull this loose end outwards, away from the anchor point. Simultaneously, use your other hand to pull the main segment of the string line (the one already attached to the nail) directly back towards you. This opposing pull creates significant leverage, allowing you to achieve a much tighter string line than pulling only one end.

Goal: Achieve optimal tension on the string line for precise alignment.