Which of these choices should be observed when climbing a tower using a safety harness?

Safety harnesses are essential for tower climbing, but they are only effective if they are properly rated for the climber's weight and haven't expired. Harness materials degrade over time due to UV exposure, weather, and general wear, so adhering to the manufacturer's allowable service life is critical. Distractors like 'always hold on to the tower with one hand' defeat the purpose of a proper 100% tie-off harness, which is specifically designed to allow you to safely use both hands to work. Additionally, securing heavy tools directly to the harness can overload its weight rating or severely throw off the climber's balance; tools should be hoisted separately via a pulley or haul line.