Well, the lakes I fish up here don't really have any useful commercial maps available. That's why I got into Dr. Depth and used isolines to create my own maps. I'm looking forward to spending more time with the technology this season, and hope to get a bit of a head start with the theory before I get out on the water in the next 4-6 weeks. I did recently order your DVDs which I didn't have before Doc. I'm sure they'll all help.
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