Usually the "safety rope" would go up over the ridge to keep you on the roof, not down towards the eave to pull you off. And after the rope goes over the ridge do not tie the other end to a car's trailer hitch to secure it.
Usually the "safety rope" would go up over the ridge to keep you on the roof, not down towards the eave to pull you off. And after the rope goes over the ridge do not tie the other end to a car's trailer hitch to secure it.