Small Fishfinder On Inflatable Dinghy


Technology has come a long way in helping anglers improve their fishing skills. One of the most used technological innovations that anglers love is the fishfinder. For those who don’t know, a fishfinder is a device that helps anglers decide where to fish. Fishfinders are also known as Sonar and Sonar/GPS combos, which provide real-time views under the water, including depth information, water temperature, GPS marking and even underwater terrain maps. Fishfinders are a handy piece of equipment. But with so many models on the market, how do you choose the right one for your needs? Here are some features you can consider to help narrow down your choice inside your budget.


Most fishfinders have dual frequency transducers. The four frequencies commonly used are 50, 83, 192 and 200 kHz. What you need to remember is that higher frequency will produce more details and will work best in shallow water, while a lower frequency is ideal for deep water. If you have a little more patience for your fishfinder to give you more detail, you can choose a higher frequency. If you are more interested in depth at any given moment, a lower frequency is the best choice.


Power is another important consideration when choosing a fishfinder. The unit of measurement used for power is wattage. What you need to keep in mind when considering the power of a fishfinder is that the higher the wattage, the quicker the fishfinder displays the readings. Higher wattage also allows you to get readings from deep waters, while lower wattage is a more suitable option for shallow waters.


Screen resolution is a matter of preference. The more pixels there are, the more detailed the display will be. That’s why this feature is a matter of preference. If you want a more detailed display, go for a higher screen resolution fishfinder. A higher screen resolution also means a larger display screen, which also has a big impact on the cost of the fishfinder. This is one case where we always want the best but don’t really need it.


This feature is also another matter of preference. One advantage of a coloured screen is that it provides more details as compared to a black and white screen. It is also easier to look at on a bright and sunny day when you’re out on the water. Coloured screens are generally becoming the norm but still do mean slightly higher prices. Most anglers just want a colour screen, which is very understandable.


This is an important technical aspect of a fishfinder you need to consider. Transducers send and receive sonar waves. If possible, look for a fishfinder with transom mount transducer since it’s the easiest to mount to a variety of smaller boats and even kayaks. But if that is not an issue for you, go for a much more advanced transducer like a thru-hull.

If the hull of your boat is made of fibreglass, go for an in-hull transducer. If the hull is made of metal or aluminium, the thru-hull transducer will be the ideal choice. This transducer is known for its superb performance.


The last factor you need to consider is the cone angle. The cone angle refers to the width of the sonar beam sent from the boat to the water. Keep in mind that the wider the cone angle is, the more area it will cover. The only downside to a wider cone angle is that the sensitivity diminishes in deep water. But, there are advanced fishfinders with transducers capable of transmitting more than one beam that can help you cover more range of depth.

As with anything in the world of fishing, there will always be something better suited to your needs and there are some products which offer more than you really need. In this case, choosing a fishfinder that will fit the type of fishing you do inside your budget is the tricky part. Sometimes we have to forgo some advanced features to be able to afford it. Hopefully, this guide will help you zone in on the fishfinder you’ll get and improve your success rate the next time you go fishing.


Can you add anything else one should think about when looking at fishfinders? Share your thoughts below.

Robert M Davies
Robert M Davies

Robert passed the "Obsessed With Fishing Test" with flying colours. Instead of talking, Robert has turned his hand to writing about his experience in fishing all around Australia.