This is correct - I have pull strings in my conduits at my house for that reason. Pulling fiber down my 1000ft driveway would be difficult to do if the pull st

This is correct - I have pull strings in my conduits at my house for that reason. Pulling fiber down my 1000ft driveway would be difficult to do if the pull string was another fiber. You can pull a new pull string in empty conduit pretty easily with a shop vac and a ziploc bag.