Follow the Contour is an iLink/HB feature that works with any of the newer version of LakeMaster products (not Navionics products) ...
http://www.humminbird.com/Category/T...ogy/Autochart/
AutoChart is a LakeMaster product ... along with LakeMaster region cards, ChartSelect maps, AutoChart Live mapping ...
(Some of the original older LakeMaster cards were not iLink compatible)
Rickie