For the ultimate experience, link up the Magnum 20 Digi Troll or the Digi Troll IV with Bottoms Line NCC 6500 and control your downriggers right from your fish finder.
Mini Mag The electric downrigger for small boats. The portable Mini-Mag is the perfect alternative for occasions that don't warrant a full size downrigger.
If your looking for a depth finder, Bottom Line has a model for you.