Epoxy could well pull out in the same way with a coating of crumbly wall stuck to it. Admittedly I haven't tried that sort of thing since bonding steel dowels into shale rock down a coal mine in the early 80s, but excessive length and much epoxy was the only way it worked.
Battens perhaps? Multiple screws and rawlplugs to distribute the load, one of which could be your original hook screwed into the timber and into a rawlplug underneath, albeit with less length in the wall. Really you need to be sure of passing through any plaster etc., so the longer the better in many ways. You could hide the old holes under a pair of battens, and gain more clearance from the wall by the thickness of the timber.
Spur shelving brackets might work? - same principle as battened hooks,but with some element of height adjustment...
Epoxy could well pull out in the same way with a coating of crumbly wall stuck to it. Admittedly I haven't tried that sort of thing since bonding steel dowels into shale rock down a coal mine in the early 80s, but excessive length and much epoxy was the only way it worked.
Battens perhaps? Multiple screws and rawlplugs to distribute the load, one of which could be your original hook screwed into the timber and into a rawlplug underneath, albeit with less length in the wall. Really you need to be sure of passing through any plaster etc., so the longer the better in many ways. You could hide the old holes under a pair of battens, and gain more clearance from the wall by the thickness of the timber.
Spur shelving brackets might work? - same principle as battened hooks,but with some element of height adjustment...