This demands a backing plate. You cannot use blind fasteners for something like this. Life safety gear requires a MINIMUM of a 10:1 safety margin which for a 200lb man would require 2,000lbs static load. Since jack lines deal with shock loads the forces could be substantially higher. You need a big backing plate, and plenty of bonding surface to do this correctly.
Since the traveler also has a backing plate there must be some way of accessing the area, even if it isn't obvious.
Since the traveler also has a backing plate there must be some way of accessing the area, even if it isn't obvious.
