Most portable devices come with chargeable lithium-ion batteries that can be charged easily. When you’re heading outdoors with the device the battery life and charging features are something you need to consider. Devices between 2 oz to 5 oz should hit the sweet spot.Īnother factor that affects the weight is the build quality.ĭevices made from ABS plastic are more durable and less likely to get damaged in case of an accidental drop. Then again, a heavier device will allow you to cast it over longer distances.īut you will need a stiffer rod and stronger lines to support it. When it comes to shore fish finders, size is an important factor.Ī portable device is also easy to carry around in the backpack. No matter the type of connectivity you choose, make sure that the device has a minimum range of 100 feet. Also, WiFi-based connections are stronger and can work better through interference. With WiFi, you get a longer range of around 300 feet. However, WiFi is a better option than Bluetooth. That means, the device doesn’t depend on a smartphone tower for functioning. The transducers in these fish finders can connect with a smart device through Bluetooth or WiFi. Imagine your fishing line getting tangled with wires. It goes without saying that a wireless device that can be easily used is the best option. It’s best not to use a device that comes with a cheap transducer. Note, the quality of the transducer will determine the type of image the device delivers on the screen. Let’s say you’re fishing at a depth of 30 feet and the cone angle is 15°. What if you want to find the diameter of the sonar cone? A higher cone angle will indicate a wider beam that can cover more area. In case you’re not so sure about the depth range, pick a sonar that can scan deeper than your average needs.Īlso, keep an eye on the cone angle of the sonar beam. If you fish in both deep and shallow water, a dual-beam or multi-beam sonar that uses both types of beam is the best choice. The depth up to which the sonar beam can penetrate and the amount of detail captured in the display.Ī high-frequency sonar will provide better detail but it won’t penetrate deep.Ī low-frequency sonar beam is just the opposite as it has more penetrating power but captures fewer data. The capability of the sonar and transducer determines two aspects. If you ask me, searching for the fish with a portable fish finder is one of the best ways to scout the shoreline and figure out where you’re going to cast. Now there are some anglers who consider using fish finders as cheating.īut for me, taking the help of technology is the smart thing to do. It will connect with your smartphone by using a WiFi or a Bluetooth signal and use the phone’s screen for the display. Things to Consider Before Buying a Castable Fish Finderīasically, a castable fish finder is a small transducer that will float and scan the water. In this Deeper Pro Plus review, I will share all the details about this unit to help you find out if this fish finder works for you. This fish finder is for my bank anglers who may not have a grand to drop on a fish finder or a boat to install it on. And that makes it a great tool for turning the odds in your favor. With easy smartphone connectivity, the Deeper Pro Plus allows you to map out the underwater terrain effectively in calm waters. I’m a big fan and I stand by them, especially castable units from Deeper. I’ve used at least 12 fish finders in over 10 years of fishing and castable fish finders are somewhat of a “new” creation. Instead of making fishing easier, they just make it more complicated. A lot of units are difficult to use, clunky, and a pain to install.Īs a result, they sometimes have the opposite effect. Using a fish finder is great as long as you know what you’re doing. We independently research, test, and recommend the best products you can learn more about our review process here.
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