More ideas from Gina
This is what I was thinking for your basement rails...using eye-rings and rope.  I think I have enough of the screw-in eye-rings so all we'd have to buy is the rope.  Not perfect but it could slow down a fall.

This is what I was thinking for your basement rails.using eye-rings and rope. I think I have enough of the screw-in eye-rings so all we'd have to buy is the rope. Not perfect but it could slow down a fall.