Fishing with a boat opens up completely new horizons for the outdoor enthusiast, allowing them to catch hard-to-reach areas of water and stay at promising depths. However, wandering on the water surface rarely brings trophies, and it is at this point that the angler faces the acute question: buy a PVC boat sonarIt's a way to turn chaotic searches into system prey.
The modern market offers a huge number of sonars, but the specifics of inflatable boats dictate their harsh operating conditions, different from the requirements for appliances for rigid boats. You will have to consider not only the technical specifications of the device itself, but also the ways of its reliable fixation, spray protection and, critically, the correct positioning of the sensor relative to the surface of the water.
In this article we will analyze in detail all the nuances of the selection, installation and operation of sonars in conjunction with inflatable boats, so that your investment in fishing equipment was as justified and effective as possible.
Criteria for choosing a sonar for an inflatable boat
The first thing to look out for when planning a purchase is the size of the device and its weight, as the space in the PVC boat is always limited. Compactness It's not the least of these, because it has to be easily placed on the transom or on the sides, without interfering with the movement of the fisherman or creating sailing in the wind. Heavy marine models with huge screens will be superfluous here, because they require a powerful attachment, which is difficult to implement on a soft cylinder.
The second key parameter is the type of emitter and its ability to operate at low speeds, because inflatable boats are often used with low-power electric motors or no motor at all. Traditional sonar 200 kHz shows the structure of the bottom perfectly, but for a detailed study of the relief and search for fish in the thickets of grass, it is better to consider models with technology DownVision or SideVisionThese features allow you to see a picture close to the photographic, which is critical when fishing on unfamiliar bodies of water.
And don't forget to protect the hull from moisture, because PVC spray in a boat is not an exception. IPX7 And it's also important to have a sealed battery compartment, which is very effective even on a short-term dive, although we don't recommend that you do it in practice, because the reliability of the battery compartment sealing is also important, because the oxidation of the contacts from salt water or dampness can put expensive electronics out of order.
- 🛡️ Protection rating: Minimum IPX7 for confident operation in the rain and in the wave.
- 📡 Scan frequency: Two-beam models (455/800 kHz) give a clearer picture than single-beam models.
- 🔋 Autonomy: The ability to work from a compact 12V battery or built-in battery.
- 👁️ Screen readability: Anti-reflective coating and high contrast for working in bright sun.
⚠️ Warning: Never place the sonar in direct sunlight for long periods without protection, even if it is turned off. The plastic of the case can deform, and the liquid crystals of the screen - burn out, which will lead to irreversible damage to the device.
Types of sensor attachment on PVC boat
The correct installation of the emitter (transducer) is 90% of the success in obtaining a quality picture on the screen. Unlike fiberglass boats, where the sensor can be smashed into the hull or used through mounting, in the case of an inflatable boat, we only have external mounting methods that must be reliable and do not damage the cylinders.
The most popular and time-tested solution is the use of suction cups or special Velcro straps that are glued to the boat. Suction method It's good for mobility, because you can quickly remove the sensor, move it to the other side, or completely remove it after fishing, but in a high wave or at high speed, the suction cup can come off, which will lead to loss of signal and possibly the sensor itself.
A more reliable, but neat, method is to glue the Velcro pad directly onto the PVC fabric, using a special adhesive for boats and a Velcro reciprocating part, which comes with some models of fasteners. Hard fixation ensures that the sensor will always be in the water at the right angle, but requires careful surface preparation and time for polymerization of the adhesive.
☑️ Verification of sensor installation
There's also the option of mounting on a squirrel board, if your boat's design allows it, which is convenient because the sensor is in a keel stream and is less prone to impacts on the water surface, but there's a risk of damage by the propeller of the motor if you don't drive it carefully. In any way of mounting, it's important to follow the rule that the radiation plane should be parallel to the water surface when the boat is in motion.
Comparative table of popular models
To help you decide on your choice and buy a PVC boat sonarWe have prepared a comparison of several relevant models that have proven themselves on water bodies.
| Model | Screen type | Frequency (kHz) | Nutrition | Features |
|---|---|---|---|---|
| Lowrance Hook2-4x | 4 inches, colored | 83/200 | 12B (external battery) | Easy to manage, good basic functionality |
| Garmin Striker 4 | 3.4 inches, colored | 77/200 | Built-in Li-Ion | Built-in GPS, up to 10 hours of battery life |
| Humminbird PiranhaMAX 4 | 4.3 inches, colored | 200/455 | 12B (external battery) | Down Imaging technology, clear picture of the bottom |
| Practical Echo 603 | 6 inches, colored | Multifrequency | 12B/Integrated | Budget option with a large screen |
When choosing between models, you should consider not only the price, but also the availability of accessories, such as additional sensors or mounts. Garmin There are a lot of third-party accessories, which makes life easier for owners of custom boats. Lowrance It is famous for its intuitive operating system, which will understand even a beginner who has never previously held a sonar in his hands.
The hidden feature of budget models
Cheap sonars often use lesser-quality plastic body, which can become cloudy over time from ultraviolet light. It is recommended after each fishing to wipe the body with protective wipes with a UV filter or store the device in a dark case.
Process of installation and calibration of equipment
After you have made a decision buy a PVC boat sonar And when you bring it home, you start the installation phase, and you start by choosing the location to attach the sensor, and the optimal area is 30 to 50 cm from the transom or the nose, depending on where you sit most and where you have the least spray.
The sensor attachment must be rigid to eliminate vibration that causes interference on the screen. If you use a suction cup, make sure that the surface of the balloon is dry and clean. After physical installation, you need to connect the device to the power source. Most models will require a 12 Volt battery that can be placed in a sealed handkerchief or a special box at the bottom of the boat.
- 🔌 Connection: Observe polarity when connecting wires to the battery (red to plus, black to minus).
- 🌊 First launch: Lower the sensor in water before turning on the device so that it correctly determines the depth.
- ⚙️ Sensitivity setting: Set the sensitivity to 70-80% and adjust during the fishing process.
- 🚫 Interference filtering: Turn on the noise filter if there are many chaotic spots on the screen.
Calibration of the sounder is a creative process, and it depends on the conditions of the reservoir. In shallow water, the sensitivity should be reduced so that you don't see the fish floating above the sensor as a solid mass. sensitivity It will allow you to see small details of the relief and single fish at the bottom.
⚠️ Warning: Do not turn on the sonar in the air without immersing the sensor in water. The emitter can overheat and fail, as water removes heat and the air is a thermal insulator.
Features of operation in different conditions
The use of a sonar on a PVC boat has its own specifics depending on the time of year and the type of reservoir. In summer, when the water warms up, the fish often stand in thermocline layers of water with different temperatures. Modern sonars They can show the temperature at different depths, which helps to find the horizon where the fish stands.
In autumn, when the water cools and becomes clearer, the fish become more careful. In such conditions, it is important not to create excessive noise and vibration. PVC boats are quiet themselves, but the operation of the sonar at high frequencies can theoretically scare fish away, although in practice this is only noticed when fishing in very small places in clear water.
Use Zoom when you're fishing in a snag, and it allows you to stretch the bottom of the snag to the full screen to see if your hook is stuck in the branches and control the bait game.
When you're fishing, you can swim, and you can set the speed of the screen update to help you, so if the boat is falling too much, you can increase the speed of the scrolling so that the image doesn't get lubricated, and you also have to remember that the fish is often not on the bottom, but in the floes or at the eyebrow, so you can see that the fish is not on the bottom. bottom-structure It is more important to find a specific depth.
Echo sounder maintenance and storage
To keep the device long and clear, you need to take good care of it. After every fishing trip, especially in salt water or in muddy waters, the sounder and the sensor need to be washed with fresh water, and salt and silt can erode plastic parts and impair the signal's permeability.
Store the device in a dry place at room temperature. Do not leave the sonar in the winter in an unheated garage or in the country: low temperatures can damage the battery and liquid crystal screen. Seasonal storage It is best to arrange in a cardboard box with silica gel inside to avoid condensation.
Check the wires and contacts regularly. If you notice oxides on the connectors, treat them with a special spray for contacts. Also inspect the sensor mount: if the suction cup has lost elasticity, it is better to replace it so that you do not lose the device during the next fishing.
Proper maintenance and storage of the sonar in the off-season extends its service life by two times, maintaining the accuracy of readings and the brightness of the screen.
FAQ: Frequently asked questions
Can I use a sounder in winter when fishing from ice?
Yes, many models work at low temperatures, but LCD screens can have a response delay in the cold, and it is important to protect the device from impacts, as plastic becomes brittle in the cold, and to avoid a sharp temperature drop when applied to heat.
Why does the sonar show the fish and it doesn't?
It could be air bubbles rising from the bottom, or echoes from the thermocline, and it's also possible that the fish is standing very deep, and you see a ghost from the previous pixel, and try to reduce the sensitivity or change the scan frequency.
Which battery is better to choose for a sonar?
The optimal choice for a sonar is a traction battery (GEL or AGM) with a capacity of 7 Ah. Starter car batteries are not recommended to use, as they are afraid of deep discharge, which often happens during long fishing.
Does the sonar see a fish under the boat?
Traditional sonars have a dead zone right below the sensor, so to see fish under the boat, you have to move the sensor a little forward or backward, or use models with a circular view (360 degrees), which are much more expensive.
Do I need to calibrate the sounder for each body of water?
No deep calibration is required, but sensitivity and noise filtering are desirable, and different water bodies have different water density and different amount of suspension, so automatic settings may not work properly.