I have the H20 C and would like to use it for traveling roadways/hunting. What is the easiest way to get hiways and contours loaded into or on SD card? Can you purchase the cards with that already on it? Thanx.
If the state you wish to travel in is covered by the Lakemaster chips then those would be your best bet. For example, the Lakemaster MN chip has the MN roads and interstates, Lakemaster WI has the WI roads and interstates, etc. Those are preloaded data cards that you simply plug and play. 
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