Hey guys, check out a solution for getting instant better mapping for some of those either hard to reach back waters or marshes or maybe just overlooked areas that need better mapping on the spot:

http://www.navionics.com/en/sonarchart-live?utm_source=iContact&utm_medium=email&utm_campaign=SonarCharts%E2%84%A2&utm_content=NAV507_Mobile_SCL_eBlast_EN