I Have not put the chip in the Humminbird unit. I just did the download to install the lakes I wanted on the Navionics + chip ( SD card) and was looking at them on the computer and saw they all are showing water depth in meters. I plan to set up the HB unit this afternoon and will select "feet" instead of "meters" but how do I get the "feet" to show on the Navionics chip when I am looking at my computer??