I've been trying to figure out how to rig a light duty hoist into my attic. Our water heaters are in the attic and need to be changed. I'm trying to figure out how to get the old ones out and the new ones back in. I was thinking about a chain hoist but they are somewhat expensive and it is hard to find one with enough lift distance. In my search I found the rope and pulley systems that you can buy, rated for up to 1,000 pounds. That is much more capacity than I need, I'm just wondering if they are reliable and durable enough to hoist the load down and up twice both directions.