Paul Clancy wrote:
Really the way to use one for rv travel involves using the trip planner and then reviewing the trip to make sure it doesn't route you poorly. If it does you add weight points that keep you on a safe route. Just selecting a destination and pressing go will lead to many problems if not disaster with a large rig.
There is exactly the right answer. Just putting a destination into a GPS, any GPS, is not the best way to use them. Treat it just like a map: plan your route out on a larger map, transfer the route to the GPS, and then double check to make sure it goes the way you planned. The 5 P's come into play here. :)
A GPS is great but they are a navigation tool, and as a tool they can be used incorrectly. Plan your route in advance and you'll rarely go wrong.