I am looking into getting Mega 360 or some kind of live sonar. I will be chasing Smallmouth on Champlain and other lakes and I want to be able to pull up to a spot, see if there are fish there, and if not, leave. Not really interested in watching fish follow bait, etc, just want to know if I should stay or go. Is Mega 360 good for this or should I look into some kind of live sonar? Thanks!