You may have to keep doing what you are doing for now and try posting on Facebook or Craigslist but not for free... (people look for free animals on those sites for bait to train fighter dogs.) At least he is getting fed and has a warm place to sleep for now.
The cat sounds friendly and not...
How great of you to do what you can for him. I have a long-haired female kitty (same coloring as yours) that was dumped here. We live at the end of a dead-end dirt road. She is also living in our shed but can come and go as she pleases.
Can you see if there is a low or no cost spay and...