Especially for carp fishing, small depressions will be an ideal feature to target. Often these depressions are created by the fish themselves. Spotting them with your fish finder is easy – just look out for small, v-shaped dips in the bottom contour as you reel or troll.
In this blog we’re focusing on the actual images you see on your screen, so we won’t be getting too technical about how sonars work – but our page on how sonars work will tell you all you need to know. But for now there are a couple of technical points you need to remember. First, that fish finders scan in cones. Why does this matter?
The size of the area you’re scanning will be affected by the angle of the cone. A wide beam cone scans between 40° - 60°, meaning you’ll be covering a large area. A narrow cone will scan between 10° - 20°. So make sure you’re aware of whether your fish finder is using a wide or narrow cone when you’re looking at the data on your screen. The Deeper PRO+ 2 has a wide, medium and narrow beam scanning (47°, 20°, 7°), the PRO has a wide and narrow beam scanning (55° and 15°), the Deeper START has a medium/wide beam (40°). One other point to remember about how you sonar works is that it is constantly sending and receiving data, which means your display will be continually scrolling. The current scanning data will be on the right – the further left on the screen, the older the data.
So just remember these 3 points when you’re looking at your sonar display: 1. Know if you’re scanning with a wide or narrow beam. 2. The screen is constantly scrolling – this doesn’t mean your sonar is moving.