Now that I have a boat I need all the goodies that go along with it. What is a good fish finder for a beginner to have? I don't need anything that will show me the exact colors and patterns on the fish. Just something that will tell me there are fish around and about how deep they are. I am a little tight on money right now so a cheaper one is would be best but I am willing to invest in a good one if it is a good deal. Thanks guys/gals I know you all will help me out.