How to use a sonar on a PVC boat: from installation to fish search

Where not to put it:

• ❌ Right for an outboard motor. Air bubbles from the screw create a “white noise” on the screen.
• ❌ On the uneven seams of PVC - distorts the angle of scanning.
• ❌ In the bow. When moving, the sensor will leave the water on the wave.

⚠️ Attention: If you use portable sonar (for example, Deeper START), throw it from the side of the boat to the length of the line 1-1.5 m Closer - there will be interference from the hull, then - loss of signal.

Installation and connection: step-by-step instructions

Even the most expensive sonar is useless if it's not connected properly. Garmin Striker 4 and Lowrance HOOK Reveal 5.

Step 1 - Transducer's fastening

• 🔧 For transom-holding: fix the sensor on the bracket so that it is completely submerged in water when moving. The angle of inclination is 0 ° (parallel to water).
• 🔧 For mounting (e.g. on the PVC boat "Corvette-330"): drill a hole with a diameter of 1 mm less than the fastener, treat the edges with a sealant, tighten the nut with a gasket.

Step 2: Connect to power

Most sonars operate from 12B. The best options are:

• 🔋 From the boat's onboard net If you have a battery (e.g., an electric motor), use a 3A safety lock on the circuit.
• 🔋 From an external PowerBank - for portable models (Deeper CHIRP+Important: capacity of at least 10,000 mAh.
• 🔋 From the lighter If the boat has a connector 12B (for example, on the Frigate 360.).

Step 3: Set up the connection

For wireless sonars (Deepersome Humminbird):

1. Turn on the Wi-Fi sounder.
2. Connect to its network from a smartphone (network name usually starts with a model, for example). Deeper_Pro_1234).
3. Launch the application (Deeper App, FishDeeper).

Sensor fully submerged |

The sounder screen is protected from direct sunlight |

Power stable (voltage 11-14V)|

The menu has the correct frequency (50/83/200 kHz) |

All sources of interference (radios, charging) are disabled.

3. Calibration of the sounder: without this, the data will be false

Many people miss this step and then wonder why the sonar shows a depth of 5 meters, and in fact 3.5. Calibration should be carried out each time the water body or conditions change (salt/fresh water, temperature).

What you need to set up:

1. Sensitivity (Sensitivity) Start with 70-80%. If there's a lot of noise on the screen, reduce it to 50%. If you can't see the fish, increase it to 90%.
2. The speed of the scroll (Scroll Speed) - in stagnant water: Auto or Slow; during or during movement: Fast.
3. Depth Range (Deepth Range) Set 10 to 20 percent more depth than the actual depth, for example, if you catch 8 meters, choose the right one. 0-10 m.
4. Type of water (Water Type) — Fresh (fresh) or Salt (Salt.) In salt water, sound travels faster!

How to check the calibration:

1. Hang the load at a known depth (for example, 3 m).
2. Compare the sounder readings to the real depth.
3. If the difference is more than 10%, repeat the setting.

⚠️ Attention: If you catch on the current, turn on the function. Surface Clarity (in the Garmin and LowranceIt filters out interference from bubbles and debris.

4. How to read an echogram: fish, grass, driftwood

On the sounder screen, every arc, dot, or line is an object underwater. But how do you tell a fish from a snag? Here are the basic rules:

Fish:

• 🐟 Doogie The bigger the arc, the bigger the individual.
• 🐟 Points Small fish or a signal from a fin.
• 🐟 Horizontal lines - a joint of fish (often happens to be in the flesh-carve or sticker).

Vegetation:

• 🌿 Clouds at the bottom - algae or grass.
• 🌿 Vertical stripes - reed or reed.

Bottom and obstacles:

• 🪨 Smooth line - sandy or clay bottom.
• 🪨 The serrated line - rocks or driftwoods.
• 🪨 Second bottom-line Thermocline (a layer of water with a sharp change in temperature).

An example of decryption:

And you can see on the screen a big arc at a depth of 4 meters, below it is a flat line of the bottom (6 meters), and in between there are small dots.

• 🔘 Large fish (e.g., pike) preys on small-sized (sticker).
• 🔘 The best place to throw is here!

5. Search for fish with sonar: tactics for PVC boats

So the sonar shows the fish -- but how do you choose a place to fish from this data?

Step 1. Bottom scanner

• 🗺️ Pass through the reservoir "zigzag" at low speed (2-3 km / h).
• 🗺️ Look. squabbling 3 to 6 m – there is often a predator.
• 🗺️ Mark the seats with snag Potential parking of a pike or catfish.

Step 2: Finding active fish

• 🎣 Stop the boat and watch the echogram for 5-10 minutes.
• 🎣 If fish surface This is a sign of jour (the best time to catch!).
• 🎣 If fish It's at the bottom and it's not moving. - it is inactive, try slow wiring.

Step 3: Catch at marked points

• 📍 Return to the most promising places (save coordinates in the sounder!).
• 📍 Use it. cat-anchor for the precise fixation of the PVC boat.
• 📍 If the fish is gone, don't chase it. Wait 15 to 20 minutes, often it comes back.

6. Common mistakes and how to avoid them

Even experienced anglers sometimes make mistakes that spoil the sounder readings. Here are the top 5 problems and solutions:

Mistake 1: Echo sounder shows depth with delay

• 🔹 Reason: Low scroll speed (Scroll Speed).
• 🔹 Decision: Install. Fast or Auto.

Error 2: There is only interference on the screen ("snow")

• 🔹 Reasons:
  • The sensor is installed next to the motor;
  • - High sensitivity;
  • - Interfer with other electrical appliances (radio, charging).
• 🔹 Decision: Move the sensor, reduce the sensitivity to 50%, turn off the interference.

Mistake 3: There is a fish, but the sounder does not show it

• 🔹 Reasons:
  • - Wrong frequency (for example, 200 kHz at a depth of 15 m);
  • - The fish is too small (less than 5 cm);
  • - The sensor is contaminated.
• 🔹 Decision: Switch to 50/83 kHz, wipe the sensor, increase sensitivity.

Error 4: The depth of the “jumping” (there are 4 m, then 6 m)

• 🔹 Reason: The sensor is in unstable contact with water (e.g., on a wave).
• 🔹 Decision: Hold the sensor tighter or use it. stabilizer (for example, Garmin Transducer Mount).

Mistake 5: The sounder suddenly shuts down

• 🔹 Reasons:
  • - The battery is dead;
  • - Bad contact in the connectors;
  • - Overheating (if you were lying in the sun).
• 🔹 Decision: Use it. PowerBank With KZ protection, check the connections, cover the screen from the sun.

7. Shocker maintenance: how to extend the life of the device

The sonar is not only electronics, but also mechanics (sensor, mounts). To last longer than 3-5 seasons, follow these rules:

After every fishing trip:

• 🧹 Wipe the sensor and screen soft-cloth (not paper!)
• 🧹 Wash the fasteners. freshwater (if caught in salt water).
• 🧹 Remove the moisture from the connectors (can be blown with compressed air).

Before winter storage:

• ❄️ Remove the batteries (if they are removable).
• ❄️ Keep it in. dry-place at 0-20°C.
• ❄️ If the sensor is removable, lubricate the thread silicone.

What not to do:

• 🚫 Leave the sounder in the sun (the screen burns out).
• 🚫 Clean the sensor with abrasive means (surface scratches).
• 🚫 Sharply pull the sensor cable (can break away from the board).

⚠️ Attention: If the sensor is damaged (crack, dent), do not try to repair it yourself. 99% of the time it will lead to water getting inside and breaking. Lowrance TotalScan It costs about 15,000 )..

8. Top 5 sonars for PVC boats in 2026

Not all sonars are equally good for inflatable boats, and we selected 5 models that are best suited for PVC:

For PVC boats up to 3.5 m, the best choice is Deeper PRO 2 (if you do not want to drill the body) or Garmin Striker 4 (if you need a screen and GPS) For professionals, Lowrance HOOK Reveal 5.

Before buying, check the compatibility of the sensor with your boat. "Wingers 300" This is a sleeve-like sleeve, and Ufimki-330. Better in-house installation.

FAQ: Frequent questions about sonar on PVC boats