Yea, bone stock should be longer boil. I have to pay attention to my propane usage though so currently I'm afraid to run that long. If we run out, I cannot afford a new tank and we could be out for weeks. 3 hours was all I felt safe doing and was cringing at that. It did not soften the bones really, I was just hoping to get more nutrients that a normal short boil. I have a large roaster but its electric and our power situation is less than desirable. I can only use it really in the day time. But I do have plenty of pots of varying sizes.

Seems everyone is pointing out grinding the meat. I'll be looking for a grinder. I've wanted one for a while now. This batch is going to catfood but i'll be grinding next time. Great idea.

Yea i'm sure the bone stock you're making gels well, tons of collagen in that broth. Ive been researching collagen and the type that is in chicken predominantly is type 2. It's the type for joints. I'm pretty sure that collagen rich broth from chickens might even help arthritis.