lugworm,
Sorry for taking so long to respond. Its been a crazy weekend.
Fish ID is going to be one of those things you decide on weather or not YOU like it. As for me, when I am fishing, and not paying much attention to the screen, I turn it on. This way I am alerted.
If I am trolling or scanning for fish, and paying more attention to the screen, I usually have it off to keep the screen from getting cluttered.
Some other things to consider:
Switchfire on Max (in water deeper than 10 feet)
83khz ON.
Maybe bump up Fish ID Sensitivity and 83khz Sensitivity a notch or two
Good Luck,
Robert