Dude chaining dogs is cruel and in a dog like a pitbull would only cause frustration,a fully fenced off section with room to move or a kennal with a decent sized run is a must for any dog owner..
Will, get out your calculator.
A 13 foot chain will give more than 500 sq ft of living space! How many kennel runs do you know have this ? Most are about 120 sq ft.
I am talking having multiple dogs here, not owning 1-2 dogs.
Chaining does not cause frustration, thats a big myth. I have both kennel runs, above ground kennels and chains that i rotate my dogs on..and all are happy go lucky kind of dogs..not frustrated at all.
If you have a kennel, you need to confide your dogs so they are not causing problems to your area or to your other dogs.
Chaining gives much more free space for the dog than most kennel runs.
On a chain in a rural area a dog can walk on grass/dirt in natural way. In most runs they walk on concrete and dont have a good view.
Do the math.