Buying the first sonar for an inflatable boat often turns into finding a compromise between wanting to see the bottom clearly and having to save budget. screen-responseThe right equipment at the start, however, determines whether you will enjoy fishing or be disappointed in the gadget.
For boat owners from PVC There are specific requirements for weight, sensor attachment, and power autonomy that are not as critical for large boats, and in this article, we'll look at which parameters to look at first, so as not to overpay for unnecessary functions and get a working tool to find fish.
Key parameters of choosing a sonar for an inflatable boat
The first thing that the buyer faces is radiation For most of the middle-band water bodies, the best choice would be the standard 200 kHz frequency, which provides a good balance between detail and depth of penetration. Higher frequencies give a detailed picture in shallow water but quickly fade away, and low frequencies (50 kHz) are designed for greater depths and are often redundant for river fishing.
The second important aspect is resolution Even if you buy a budget model, try to avoid screens with a resolution of less than 240x160 pixels, as they will look like blurred fish arches. Clear picture allows you to confidently distinguish fish from bottom debris or driftwood, which is critical when fishing from a boat.
⚠️ Attention: Do not chase the maximum number of beams. For a beginner, a one- or two-ray (2D) sonar will be more informative than a multi-beam one, where the image can turn into mush due to inability to interpret the data correctly.
It is also worth paying attention to the presence of a function. Down Scan Or structural scanning in more expensive models, but it's quite enough to start with a classic 2D mode, the main thing is that the device can quickly update the picture, because the speed of the PVC boat is rarely high, and the delay in response can lead to a missed perspective point.
Features of fastening the sensor on the PVC boat
Installing the sensor on the inflatable side has its own specifics, since the classic transom fastener can damage the material or create excessive resistance. PVC The perfect fit is a special suction cup or inflatable mounts that are fixed to the cylinder and do not require drilling, which preserves the integrity of the boat and allows you to quickly remove equipment after fishing.
It's important to consider the angle of inclination of the sensor, which is that it has to be strictly perpendicular to the surface of the water in the working position of the boat, if the sensor is upside down or down too deep, echo It will reflect incorrectly, creating dead zones or false depth readings.
Suction-suction-installation secrets
When using a suction cup, be sure to degrease the surface of the balloon with alcohol before installation. It is also recommended to pass the safety cord through the ring of the boat so that when hit by a snag, the sensor does not fly into the water along with the suction cup.
Some anglers prefer to use portable floats-boers, which simply go overboard on the line, which is the easiest and cheapest option, eliminating any manipulation of the balloon, but it is less convenient when actively fishing on the current, since the sensor can be carried away away from the projection of the boat.
Earrow power: batteries and autonomy
The issue of energy consumption for owners of inflatable boats is especially acute, since each extra kilogram of cargo affects the driving performance. Modern sonars consume a little energy, usually in the range of 0.2-0.5 Amperes, which allows the use of compact sounders. battery 4-7 Ah. This volume is enough for a full day of fishing.
For fishing from a PVC boat, the best choice will be hermetic AGM or GEL batteries that are not afraid of tilting and possible water spray.LiFePO4) batteries are also an excellent option, as they are much lighter than lead counterparts, but their cost is still higher.
Use special sealed boxes or battery bags with the wires out, which will protect the battery from rain and splashes, and also prevent short circuits with fishing gear.
Do not forget about cables: to connect the sonar, it is better to use a wire with a cross section of at least 0.75 mm2 to avoid a voltage drop over long distances. If you plan to go fishing at night, make sure that the battery has a reserve of capacity, since the screen lighting also consumes energy.
Popular models for the start: budget and functionality
The market offers many options, but for a beginner, it is important to choose the middle ground between price and quality. Garmin, Lowrance and PracticalGarmin Striker or Lowrance Hook models often make the top sales thanks to their reliability and clear interface.
Comparative table of popular models will help to orient in the specifications:
| Model | Screen diagonal | Frequency | Features |
|---|---|---|---|
| Garmin Striker 4 | 3.5 inches | 77/200 kHz | Built-in GPS |
| Lowrance Hook2-4 | 4 inches | 83/200 kHz | Auto-tuning |
| Practitioner 6M | monochrome | 70 kHz | Russian brand |
| Humminbird PiranhaMAX 4 | 4.3 inches | 83/200 kHz | Bright screen |
When choosing a particular model, pay attention to the presence of Russification menus, as in a stressful situation on the water can be uncomfortable to understand English terms.
For the first purchase, it is better to choose a model with a diagonal of 3.5-4 inches and a built-in GPS tracker to not only see the fish, but also return to catch points.
Setting up and first steps on the water
After purchasing and installing the equipment, the adjustment stage begins, on which 90% of success depends, first of all, you need to choose the correct language and units of measurement, switching the feet to the right ones. metre You then calibrate the speed of sound in the water, although standard factory values are usually sufficient for fresh water.
The main tool of the fisherman is the sensitivity adjustment (SensitivityHigh sensitivity shows a lot of noise and small details, low sensitivity hides small fish, optimal sensitivity so that the screen can see interference from the surface, but the bottom remains a clear line.
Don’t be afraid to experiment with zoom.ZoomIt is 2 to 3 meters above the bottom that fish are most often found, and a detailed view of this area allows you to see even cautious bites or movements of flocks.
Common mistakes made by beginners
One of the most common mistakes is to expect the sonar to show the fish in realistic silhouettes, like in advertising, but you're actually going to see arcs or dots, and you can only learn to recognize them with practice. Doogie They appear when a fish passes through the cone of the beam, and their shape depends on the speed of passage.
The second mistake is ignoring the speed of the boat. If you wiring too fast, the sensor does not have time to update the picture, and the fish is "smeared" on the screen. For a high-quality picture from a PVC boat, the optimal speed is 3-5 km / h, which corresponds to the operation of the electric motor at medium revs.
⚠️ Attention: Don't try to fish by constantly looking at the sonar screen. The instrument is a place-finding assistant, not a toy. Keep your mind off it so you don't miss the actual moment of the bite.
Also, beginners often confuse thermocline and grass thickets with bottom, thermocline looks like intermittent horizontal lines at a certain depth, and grass looks like vertical bars going from bottom to bottom, and understanding these differences comes quickly when you watch the changes in the picture carefully.
Equipment care and storage
The sonar, like any electronic device, requires careful treatment, especially in humid environments. After each fishing, be sure to wipe the screen and the sensor body with a soft wet cloth, removing the residue of salt, silt or fish slime. Freshwater less aggressive, but drying, it leaves a plaque that can impair screen readability.
It is better to store the device in a dry room at room temperature, avoiding direct sunlight, which can burn out the screen matrix or deform the body. The sensor should be removed from the boat if you leave it for long-term storage, as constant contact with water and temperature changes reduce the life of the cable.
☑️ Checklist after fishing
Check the status of the contacts and connectors regularly: oxidation can lead to signal loss or false depth readings. Using silicone lubricant for connectors will help extend the life of the connecting elements.
Can I use a sounder in winter in cold weather?
Most modern sonars are designed to operate in temperatures up to -10°C, but LCD screens in extreme cold can stick and slowly renew. The battery also loses capacity in the cold, so it is better to keep it in the inner pocket of clothes, extending the cable to the sensor.
Will the sonar show fish under the ice?
Yes, if you put the sensor down the hole, but for winter fishing, it is more convenient to use special winter models with remote cicada sensors or wireless modules that do not require ice drilling to install.
Do you need GPS for fishing from a PVC boat?
GPS is extremely useful for keeping track of catch points (snags, pits) and tracking tracks, allowing you to go back to the tracked points and analyze where the fish were found, which speeds up learning.
Is the sonar lying on the rocky bottom?
On a solid rocky bottom, the signal is reflected very clearly, and the bottom looks like a greasy line. Sometimes secondary echoes are possible, which can look like fish at double depth, but an experienced user can easily distinguish them by their characteristic repetition of the terrain.
How often should the battery be charged?
Charging the battery immediately after fishing, without leaving it in a discharged state. Even if the device worked for a short time, a full charge will extend the battery life, especially if it is lead-acid type.