haha. do you have to buy maps for the lakes? if i was to fish rend mostly would i have to buy that map or would it just know i was at rend?
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It should know you're at rend lake if it's got a base map that comes standard in the unit, which most all do that I know of. I would get something that takes an sd card or at least can download maps of lakes off of your computer. You will like the contour lines in a detailed map - very handy. They allow you to see flats,ledges, channels (which is also a good place to avoid stumps), humps, etc. I used a handheld on the lake for a few years until I got a 788ci. The Magellan is a good unit, and worked good for brushpiles and stumps, but for navigation the HB with the lake map is the way to go.