Get a load of these screen shots! Buddy of mine did some charting over the weekend using Auto Chart Live and created some custom Lake Master charts - live and in real time. There is a whole slew of other features that you can use to customize your maps as well, including water level off set and if you have an iPilot Link Minnkota, you can set it to follow any contour you have made. You can only do this with the ONIX units. My advice - get down to D&R and pick one up! check out the images I tell you one thing... there are things I thought I knew of Shebs. With this technology - look out