I have the room and I would highly recommend the clothesline pulleys made by Wright Aluminum Company of Ontario, Canada. These are well designed, sturdy cast aluminum pulleys that won't cut your hands and won't fall apart under tension.
I use a plastic coated wire cable (available at home improvement centers) that I keep taught with a turnbuckle connecting one pulley to its steel post support. The line doesn't sag and is easy to operate.
I use a plastic coated wire cable (available at home improvement centers) that I keep taught with a turnbuckle connecting one pulley to its steel post support. The line doesn't sag and is easy to operate.