It has been 3 months now since I first hung 23.5 pounds on a single Hercules Hook on a 1/2″ drywall panel. And it is still hanging, although the hook continues to deform, slowly but surely. As you can see from the photo, the hook has deformed another 1/8 inch or so since I checked 2 1/2 months ago. So now there is about 1/4″ of total deformation as compared to a new hook.
Also, the hook is starting to dig into the drywall where it hangs, with a total of about 1/8″ so far.
I have placed the weight back on the hook. The next time I post will be when my 23.5 pounds falls out. See you later on this topic!