A reader of Rock & Ice wonders why a toprope would stretch so much.
“The rope stretched and he fell nearly 25 feet. With most ropes having 30 percent or more dynamic elongation, how can we toprope without falling so far due to rope stretch?”
“It sounds like at least some of the stretching was in the truth. A climbing rope should not stretch 25 feet in any toprope situation.”
Good advice in the article on taking up slack when working a crux on toprope.