Bottom Line Fish Finders 

& 

Cannon Downriggers!

Tournament Master HR is feature-perfect. The HR has the clearest screen and highest resolution of any fish finder on the market today. Sidefinder® technology looks for fish out to the sides and the bottom of your boat with one transducer. GPS Mapping ready with the GPS 12 receiver.
Affordable electric downriggers like the Mini Mag and Magnum 10 (workhorse of the Great Lakes) make trolling with downriggers a pleasant experience.
BottomLine fishfinders and depth finders utilize sidefinder technology allowing you to pinpoint fish below your boat and off to the side, at the same time.