Looking to upgrade my fish finder and am completely ignorant on the subject. The one we have now is an old Lowrance 520-C so I have a list of questions to bug you experts with.

-Do I need water speed and land speed or just one or the other?
-Do I need side view and down view?
-What angle cone should I be looking at?

Any help is greatly appreciated.

On this note we took our boat on its maiden voyage yesterday and even with working all the bug out, managed two nice trout in the boat. Only looking forward to getting better.

Thanks again,
Clint