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Title: Only one map at a time!!!
Review: I read the older reviews and went ahead and bought the BlueNav CD anyway, in the hope that Magellan would have corrected the shortcomings reported previously. Unfortunately, they did not. The biggest problem is the limitation of one map at a time!!! You can only use one SD card (the one you activate) and can only have one map on it at a time. You can change maps, but need a laptop and a lot of time for this. I'm a kayaker (and don't generally carry a laptop in the boat with me), so this product is totally useless for me in any but the most limited circumstances.Bad, Magellan!!! Bad!!!!!
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