Thanks, that's what I was trying to figure out - if I could use a male with a back issue and still get some birds without the back problem out of him.
One of the best looking cockerels, with a beautiful broad back and tail, is dumber than a box of rocks. He tries to hump my boot every time I walk into the coop. He gets a little unexpected flight every time he tries it, but he always tries it. Makes me think a slightly round-shouldered, narrower-tailed bird that knows the difference between a pullet and a boot might be a better choice in the long run.