Right now there are a few deals out there on the Humminbird 398 SI combo unit. They are hitting around $250 to $300. This may be my only chance to own a side-imaging unit until the Helix drops this low, but I was curious if the 398 is too small of a screen for the side-imaging to be useful? Is there a way to increase the view by zooming in to show only one side at a time, maybe? It's almost too tempting to pass up, but I was curious if anyone else here had dealt with one and if its small screen size was a factor in it's being discontinued.