I , too, have the Garmin 162 with the built in antenna..I can move it from big boat to Lund due to the built in antenna feature..I also have an ETrex hand held which I use as a digital compass mostly..the "bread crumb" analogy is correct in that it could be hard to follow. The screen is really small but as a compass it is great. The 162 is very cool and has an adequate map built in as well as tide tables and really easy to use menus...If you aren't putting the GPS in your pocket hiking in the woods I agree that the fixed unit with built in antenna makes sense...I have friends who use Lowrance hand helds in RAM mounts on their small boats and they invest just about as much as the 162 with a screen that is so small it is ridiculous to see in the sun. The ability of the 162 to interface with other devices like a laptop computer for example and also can be downloaded with the latest topographical charts...great tool for around $400