I am finally getting a sonar/GPS unit but Humminbird doesn't give out much information on the built in unimap. Does unimap show contour lines on Devils Lake ?
the unimap is not very detailed... lowrance nor humminbird built in maps are very good... humminbird does have the ability to map the lake yourself with autochart and a zeroline card... but then you have to find all those shallow spots yourself once or twice