I'd give this 5 stars but the 3 hook attachments aren't mounted equally distant.  I got pretty lucky and moved the hook it hangs on and didn't have to modify the product. The product image showed 2 hook points as well, not 3, so I'd maybe expect 3.

I leave this extended with the bottom few inches rolled up. It has elongated by about an inch after a few weeks.  It cuts the light but it won't completely block vision when it's bright out.  I would try to adjust the manual hooks every few weeks just to make sure it's not loosening the twisted strings.