Your premise is garbage.

You can’t get anywhere near an event horizon and survive because of the crushing gravity and high energy particles that orbit Black Holes.

You also cannot put something on a line and pull it back from the Event Horizon because Gravity is too strong, which is why there’s an Event Horizon in the first place; that is the point from which nothing macroscopic can return.

If you tried this the line would just get sucked into the Black Hole and whatever it’s attached to would get ripped from its foundations and also sucked into the Black Hole.