With my 898ci hd I have several sonar selections, duel, quad, side hd, side ect. My question is which sonar is best for marking fish at trolling speed in 50-70 feet of water? Just trying to get a handle on the 2d for now.
Also I have installed a high speed trasducer, what beam do I select for location fish at running speed 20-30 mph. ? Thanks for your input