Hey All- I have a Gheenoe NMZ. Im doing a solo backcountry camping trip to the Everglades next month and need to work out a GPS. Ive looked heavily at the Garmin 78sc, especially now that its on sale for $250s. Comes with the maps and all. I recently saw that Garmin has a new EchoMap 44 GPS/Sonar combo, also with the maps. It would be nice to have a sonar for fishing inlets, etc. My worry is that I get backcountry and I run out of battery, and be SOL. Especially with trolling motor use and so forth. I'll be back there for 2 days. I have a 5w solar panel charger, but turns out that only charges when the sun is out! Any advice one way or the other? I don't need a GPS often. In fact, hardly ever. I think Id get more use out of the sonar long term. In the interest of being simplistic, Id like to only have 1 unit, not multiple things on the boat. Thanks for any advice!