I never knew a good Producer Hen that had skinny legs. None of my Goldmine Producer Hens were big in the body but all of them rated two particular features (1) A tendency if no more, towards depth in keel. They were not deep, in the accepted sense, but the similitude to depth was apparent when handling. (2) They had think legs with no tendency whatsoever towards 'stiltiness'.
Not once, but several times, I had to cut the rings off 6/7-year old Producer Hens because the metal was biting into the skin of the leg. On the other hand, whenever I bred a 'stily' hen with thin legs I noticed that she also sported a somewhat 'swanny' neck.
Taken from The Strain Makers
by Old Hand
