Bottom Line Fish Finders 

& 

Cannon Downriggers!

Uni Troll Get the biggest bang for your buck! You get a downrigger with a low-profile swivel base and telescopic boom to boot, all in one package.
Digi Troll IV Designed for serious sport fishermen who demand the ultimate in downrigger technology. Digi-Troll IV is equipped with Positive Ions which allows you to attract more fish by creating a field of positive ions around your boat.
If your looking for a depth finder, Bottom Line has a model for you.