Wilk, If you're interested, there is a free Humminbird class being taught next Friday evening at Smithville Marina. Class starts at 6, includes sammich for dinner. Sit through class Fri eve and then you get 30 minutes on Saturday morning with an H-Bird Pro in your boat to help you fine-tune your setup.
Class is free - not sure if they still have spots available, but you can call the marina and find out!