Have a two-part question. First, what do most of you go by to breed your yearling heifers? Is it weight, height, age or a combination? Any guidelines I need to be following. Second, once I do breed this heifer, I was wondering what to use. She is a late May heifer out of an EXT son and a commercial cow. The one thing I would like to change on her is that she is pretty fine-boned. Any suggestions on what to use would be great. Can be registered bulls or crossbred, doesn't matter to me.