Transducers: Fishfinders operate using a single frequency transducer, dual frequencies, multiple frequencies or a broadband CHIRP system. In general, higher frequencies give the finest detail resolution, the least background noise on your screen and the best view from a fast-moving boat, but don’t penetrate as deeply as lower frequencies. Shallow-water inland anglers generally choose higher frequencies of 200kHz, 455kHz or 800kHz. For maximum depth, use lower frequencies. We recommend 200kHz or higher (up to 800kHz) for water depths up to 200' and 80kHz or 50kHz for deeper waters.
For deep-water fishermen, and those who spend much of their time angling in open water, a GPS is essential. When you are far from landmarks and familiar sight-lines, your chances of success can be much better when you can return to that favourite spot. Commercial-fishing pros understand this as well as anyone, which is why they invest in quality GPS equipment.

You want to turn the fish finder on. It will be set in automatic mode already, with the pre-program settings already on. You can switch it to a manual mode at any time to customized the finder. When you first turn it on, you can leave it in the automatic mode. You then want to drive on the water in automatic mode to get an idea of what it’s seeing.
It changed the game once. Now it’s poised to do it again. The HELIX Series has evolved, now offering MEGA Imaging+, Dual Spectrum CHIRP and Bluetooth connectivity in select models, along with exclusive technologies like Humminbird Basemap that you won't get from any other fish finder in its class. Power. Bold styling. Ease of use. In this family, the apple doesn’t fall far from the tree.
Hockey tape was made for the ice, and even though hard-water anglers are looking for a different kind of score, they should always have a roll on hand. A few wraps around the butt and foregrip of any jigging rod immediately improves the hold and comfort, but hockey tape can be used on any ice tool. If you’ve ever had the cheap rubber handle cover disappear from your ice scooper, you know the feeling of metal freezing to a glove or the burning sting of touching it with your bare hand. A few wraps of hockey tape can easily fix that. Should your bibs or jacket get hooked or ripped, the hockey tape will keep a tear from getting worse until you can make a permanent repair.
The thickness of the line representing the bottom is also a great clue to bottom hardness. Here the rule is simple – the thicker the line, the harder the bottom. But, be careful – sonar sensitivity can affect how thick the line is. The Deeper display has adjustable sensitivity. So if you turn up the sensitivity to 100%, the bottom line may appear thicker, if you turn it down to 10% it may appear thinner. So practice adjusting the sensitivity and get used to judging how much the bottom thickness varies based on this.
Whatever species you are hunting, knowing the hardness of the lake bottom and its consistency is another key piece of knowledge when you are trying to crack the code and get the fish biting.There are 3 factors to consider when working out if the bottom displayed on your fish finder is hard or soft: bottom colour, bottom thickness, and the presence of a 2nd bottom return or not.
Here’s a useful tip for judging the width / thickness of a sonar return: switch on the vertical flasher (also know as a-scope) on your fish finder if it has one (to do this on the Deeper App, go to Settings > Sonar > Vertical Flasher). The vertical flasher on the right side of your screen will show you exactly what’s under your sonar at this exact moment. You can use it for vertical jigging, and of course forice fishingtoo. For judging fish size, look at both the thickness and width of the returns on your vertical flasher. A larger fish will give both a wider and a thicker return.
Many people prefer to fish solely with lures, which are artificial baits designed to entice fish to strike. The artificial bait angler uses a man-made lure that may or may not represent prey. The lure may require a specialised presentation to impart an enticing action as, for example, in fly fishing. Recently, electronic lures have been developed to attract fish. Anglers have also begun using plastic bait. A common way to fish a soft plastic worm is the Texas rig.
Commercial and naval fathometers of yesteryear used a strip chart recorder where an advancing roll of paper was marked by a stylus to make a permanent copy of the depth, usually with some means of also recording time (Each mark or time 'tic' is proportional to distance traveled) so that the strip charts could be readily compared to navigation charts and maneuvering logs (speed changes). Much of the world's ocean depths have been mapped using such recording strips. Fathometers of this type usually offered multiple (chart advance) speed settings, and sometimes, multiple frequencies as well. (Deep Ocean—Low Frequency carries better, Shallows—high frequency shows smaller structures (like fish, submerged reefs, wrecks, or other bottom composition features of interest.) At high frequency settings, high chart speeds, such fathometers give a picture of the bottom and any intervening large or schooling fish that can be related to position. Fathometers of the constant recording type are still mandated for all large vessels (100+ tons displacement) in restricted waters (i.e. generally, within 15 miles (24 km) of land).

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