The choice of navigation equipment for a light inflatable boat always involves a number of compromises between functionality, weight and method of installation. Garmin echoer For many years, the company has been the benchmark for reliability in this segment, offering solutions for both professionals and amateurs, and owning a PVC floating craft imposes its limitations: the lack of a rigid transom of standard thickness, the inability to wiring cables inside the board, and the constant need for rapid assembly and disassembly.
That's why the installation Garmin Striker or more advanced series EchoMap A mistake in choosing the type of sensor or the method of attaching it can turn fishing into an agonizing experience when half the time is spent fighting equipment, while a properly selected system turns even a simple two-seater boat into an effective tool for finding fish.
Modern scanning technologies allow you to see the structure of the bottom and fish with incredible detail, but on a PVC boat, the issue of power supply and protection from moisture becomes critical.
Many fishermen underestimate the impact of an electric motor or a gasoline outboard motor on sonar readings, which leads to noise on the screen.
In this article, we will break down all the technical nuances that will help you avoid common errors and get the most out of your device.
Key criteria for choosing a model for inflatable boats
The first thing to look at when buying is the type of emitter and its compatibility with your fishing conditions. For PVC boats, which are often used in shallow waters or overgrown bodies of water, the frequency of sonar is critical. 50/77 kHz good for great depths, but give a blurred picture in shallow water, while high-frequency 260/455 kHz technology DownVü and SideVü It provides detail comparable to photography.
The second important aspect is the dimensions of the head unit and the presence of built-in GPS. For a small boat, a huge screen can become a burden, occupying usable space and closing the view. BlueChart or Navionics allows not only to search for fish, but also to safely navigate through unfamiliar reservoirs, marking snags and brows.
And we also need to keep in mind that we need to protect against water, although most Garmin devices are standard. IPX7This means that short-term diving, constant spraying and direct rain exposure on PVC boats is the norm. Make sure that the model you choose has reliable port plugs, as contact oxidation is a common problem when operating in salt water or simply in high humidity conditions.
When choosing a model, pay attention to the presence of a transition plate for mounting. PVC boats often require the purchase of a universal swivel bracket separately.
Features of installation of the sensor on the transom of the PVC boat
Installing a sensor on an inflatable boat is the most creative and critical step. Unlike metal or fiberglass boats, you can't just drill a hole or use a standard grip on a hard transom. The basic rule is that the sensor should be submerged in water, but be able to recline when hitting an obstacle so that neither the equipment nor the cylinder of the boat can be damaged.
The most popular solution is to use plastic or aluminum clasps that are fixed on a transom board. However, the transmunz board on PVC boats is often of variable thickness or rounded edges. eccentric clamps They're better than screws because they allow you to adjust the compression force without deforming the balloon, and it's important to have the sensor in a horizontal position, parallel to the bottom, otherwise the picture will be skewed.
⚠️ Warning: Never attach the sensor directly to the inflatable part of the balloon, even through a suction cup. When moving, the water creates a powerful dynamic pressure that can tear off the suction cup or, worse, damage the PVC material at the contact point.
If you're using an electric motor, consider mounting the sensor on a lower unit, which frees up the transom, but it requires caution: when hitting grass or silt, the sensor can clog, and when hitting a hard obstacle, it can break off with part of the motor. For beginner anglers, the transom mount remains the most predictable and safe option.
☑️ Verification of sensor installation
Comparison of popular Garmin series for small craft
Garmin's line of devices is extensive, and it's easy for a beginner to get confused in acronyms. For PVC fishing, the series is most relevant. Striker Plus, EchoMap Ultra And they're all portable, and they're all very different, and they have different strengths, depending on the budget and the functionality that you need.
Series Striker It's a workhorse for people who just want a good sonar without any extra functions. It's not a sophisticated cartplotter, but it's a great sonar and GPS tracker. Striker 4 or Striker Plus 4sv Ideal for small boats due to its compact screen and low power consumption.
In turn, the series EchoMap It offers full-fledged mapplotters with the ability to install memory cards, a choice for those who like to explore new bodies of water and build their own maps of the bottom with the help of technology. Quickdraw Contours.
| Model | Screen diagonal | Sonar technology | GPS | Optimal for |
|---|---|---|---|---|
| Garmin Striker 4 | 3.5 inches | CHIRP | There. | Small boats, light fishing. |
| Striker Plus 4sv | 4.3 inches | CHIRP, DownVü, SideVü | There. | Search for fish in the snare and at the brows |
| EchoMap Plus 43cv | 4.3 inches | CHIRP, ClearVü | A full-fledged cartplotter | Navigation and fishing |
| EchoMap Ultra 102sv | 10 inches | Ultra High-Definition | Top GPS. | Large PVC boats with hard flooring |
What is Quickdraw Contours Technology?
It's a feature that lets you create your own detailed bottom topography maps in 30cm increments in real time. You just float around a pond, and the device builds a map that can be saved and used in the future or shared with other Garmin users. Perfect for fishing in wild, unregistered water bodies.
Electricity supply in the field
The issue of power supply on PVC boats is especially acute, as there is usually no place to accommodate a heavy starter battery. Standard 12-volt batteries weigh from 3 to 15 kg, which significantly affects the load capacity and centering of the boat.LiFePO4) batteries which weigh three times less than lead-acid analogues at the same capacity.
For a few hours of day trips, it may well be enough quality Power Bank It's a fast-charging protocol with 12B output, if your sonar is powered by that or is used through a DC-DC converter, but for full-time operation, especially with the GPS tracker on and the screen backlit at maximum brightness, it's better to have a storage capacity.
Wiring also requires attention. Cables should not be placed on the floor of the boat, where they can be stepped on or cut with a sharp object when assembled. It is recommended to use a corrugated tube or special cable channels attached to the sides or banks. All connections should be securely insulated, since salt water instantly oxidizes open contacts, leading to loss of signal.
⚠️ Warning: Do not use thin-section car wires to power the sonar. A voltage drop on a long cable can cause the sonar to malfunction and interfere with the screen.
The optimal solution for PVC boats is a compact LiFePO4 battery with a capacity of 6-10 Ah, fixed in a sealed box under the seat.
Set up the sounder for maximum efficiency
Once installed and connected, you need to set the device up correctly. Factory settings are often averaged and do not take into account the specifics of your reservoir. The first thing to do is calibrate the sonar by selecting the correct depth range.Auto Gain) is good to start with, but manual sensitivity adjustments allow you to cut off unnecessary noise, for example, from air bubbles or thermoclins.
An important parameter is Colorline This feature paints denser objects (fish, hard bottom) into brighter colors, helping to distinguish fish from bottom debris or algae. For fast-flowing rivers with a lot of suspension, sensitivity is better reduced so that the screen does not turn into a porridge of interference.
If you use a sonar on the go, make sure the screen refresh rate (Update RateThis will allow you to see changes in the bottom topography in real time, which is critical when passing a brood or dumps, and it is also worth setting alarms, for example, an audible signal when you find a fish of a certain size or when you approach a given depth.
Typical errors and ways to fix them
Even experienced anglers sometimes have problems operating PVC boats' sonars, and one of the most common is the appearance of arcs or chaotic stripes on the screen, most often due to cavitation: air bubbles that form around the sensor because of its improper position or the presence of algae.
Another common mistake is the sensor's orientation is wrong, and if it's vertically skewed, one side of the beam will see the bottom and the other side will see the water column, which will create the illusion of depth differences where there are none. Regular checks of the emitter's purity and density of its adjoining water are mandatory.
Why does the sonar show a double bottom?
This phenomenon is often found on a sluggish bottom or in the presence of a thermocline, and the signal is reflected from the boundary of the layers of water or dense sludge, creating a phantom echo, and adjusting the sensitivity and frequency of sonar usually helps to remove this effect.
If the motor is too close to the sensor, its magnetic field and running windings can cause severe interference, in which case increasing the distance between the motor and the sensor or using ferrite rings on power cables helps.
Frequently Asked Questions (FAQ)
Can I leave the Garmin sonar on a boat in winter?
It's not recommended. Although the devices are water-resistant, low temperatures can damage the LCD screen, and condensation inside the case at temperature extremes will cause the board to oxidize. Store the equipment at room temperature.
Does the color of the PVC boat affect the sounder?
No, the color of the boat material does not affect the sonar, since the sensor is in the water. However, the light color of the boat inside can create glare on the screen in sunny weather, so dark interior tones are preferable for readability.
How long is the cable required for a PVC boat?
A standard cable length (usually 6 meters) is enough for most PVC boats up to 4-5 meters long. If you plan to install a battery in the bow and a sensor on the transom, you may need an extension cord, but try not to build the cable more than 3-4 meters to avoid losing the signal.
Do I need to lubricate the charging port seals?
Yes, it's a great habit. Periodic lubrication of rubber seals with silicone lubrication keeps them elastic and ensures that they are leaky, especially after the season of active use in salt water.