Fire up your soldering iron and solder that "D" ring on. Be liberal with the solder, we want this thing to be nice and secure. Beware of cold joints, just by adding a lot of solder doesn't necessarily mean it will hold especially if its a cold joint.
My pull tab is made out of VECTRAN which i had lying around the office. You don't need space string to make this work, standard nylon cordage will do just fine. All I did was tie a half-hitch and overhand knot the loose end.