Mapping the bottom of your favorite pond, lake or river is extremely easy using Garmin’s Quickdraw Contours mapping system. Stetson Blaylock custom maps an uncharted 6-acre pond to 1-foot contour accuracy in less than 10 minutes. The custom HD contour map reveals hidden structures and likely fish holding areas. The beauty of this system is that the mapping is produced in realtime, and available for immediate use. It’s also private, but with the option to share with the Quickdraw online community, which hosts free user-generated map data.