It is hard to really grow training big men. The exchange rate on top flight guards vs big men is rough and you are often spending more on salary because you have down low monsters on the roster eating up cash. I am considering just switching to guard training after finishing up Yusuke or an outright roster detonation and enjoy a free fall for a season or so while sucking in money and draftees.
Accept that some days you are the pigeon and some days you are the statue. Dilbert