been there..done that
I believe the spring is needed to keep the hooks in the closed position, else the keeper moves to let the hook come unhooked, and your lifeline gate is dragging in the water.I replaced mine with the ones that come with common drywall butterfly fasteners. Maybe im not calling it by its correct name. You know, you drill a hole in drywall, fold the butterfly wings against the screw, then insert the wings in the hole. The wings then spring open against the back of the drywall and you can tighten the screw...Anyway, that spring, with a few modifications, lasted for years when I did replacements on mine. Eventually I just went to new Johnson pelican hooks. They are much nicer and easier to use (but expensive).