As you can probably see, there is no consensus. We all do it differently, but the same general cooking tactics apply. Cook them slow and moist. "Don't boil, simmer" is great advice.
I do different things, depending somewhat on age but also what I want to use them for. I do not put a lot in freezer camp. I free range mine so the feed costs are not extreme, so I leave most of mine on the claw in case the power goes out and we lose what we have in the freezer.
One thing I do, especially with older roosters that I think might work for you. When I butcher a chicken, regardless of age, I save the neck, backs, wings (not much meat on wings), gizzard, heart, and feet to use for broth. For your purposes, you could add the breast, legs and thighs. Then I fill a crock pot with the chicken, onions, celery, carrots, and water. I personally also add oregano and basil but I have a bunch dried from my garden. You can add garlic, thyme, whatever you feel like. Then I put the crock pot on low overnight. The next morning I take the chunks out and pick the meat. The broth gets strained through about four layers of cheese cloth and the fat removed. I don't use the breasts, legs and thighs to make the broth and I usually get about 4 pints of broth from one fairly young rooster, say a 15 week old. If you use all the meat, you could get more. I once processed a full grown rooster this way but included all the meat. I got 13 pints of broth from him and 5 cups of cooked meat, perfect for pot pies, chicken tacos, or noodles. I can the broth. It is rich enough that if you put it in the refrigerator, it coagulates. Talk about making good soup or just cook rice in that instead of water.
I use the feet in the broth. They can be hard to clean, but I find if you scald the feet, the skin/scales peel right off and the toenails will even slide off if you pinch and pull. No problem at all with dirty feet.