Thanks For the help guys. Bought a Helix 9 today !!! What an improvement this will be over my current 1990s graph . ( Helix 9 cost me more $ than my first boat) Sending transducer to Humminbird in the morning to upgrade to HD transducer. Looks like I'll have to find a vender to buy Lakemaster Plus card . Local BPS does not stock them yet .