I am going to need to retire my GPS soon I think, or at least move it to the back up position. So now I'm thinking using my tablet with one of the programs, maybe navonics or something. I'm not fully sold on using the tablets/cell phones, but I will always have my garmin on me as a back up. So a few questions. First does anyone know is the gps programs fully download and save the maps on the tablet? Or do you need a wireless connection all the time? Second, has anyone found a decent solution to seeing a screen in direct sunlight? Is there an antireflective/polarizing/anti-sucking, screen protector? Third, what cases are you guys using for waterproofing? and can you have it plugged in to a charger while it's in the case?