mbj4ksu, I would chase the gape. If your goal is larger LMB, then I would only feed enough to keep the BG at a size best suited to the vertical gape of your existing LMB population. My experience here has been that LMB will most often target a BG slightly smaller than their gape. If you want to keep your BG at a size best suited as forage, then accessing the LMB would be the first thing I would do.
This will be the first year I've fed Optimal in a controlled environment, so I can't comment on that other than to say that feeding a lower volume of a higher quality food would always be my first choice.
