Forward Facing Sonar: How It Works, What It Costs, and the 2026 Rules

Forward facing sonar is a fishing transducer on the trolling motor or a pole that scans a thin slice of water ahead of and below the boat and draws it live. A bass, a brush pile and your falling lure all move on the screen as they move in the water. LiveScope is not a different thing: it is Garmin’s brand name for it, as MEGA Live and ActiveTarget are the names of the two rival systems. Complete live sonar now starts at $999, and a full system from any of the three makers costs about $2,200–2,900. The figures come from the makers’ spec sheets, dealer prices and the rulebooks themselves.

In 2026 a Bassmaster Elite pro may use live sonar at no more than five of nine regular-season events, and a coin flip decides which five.

What is it, and how is it different from a normal fish finder?

Traditional sonar looks down and draws history. The screen scrolls, and a fish is an arch drawn a few seconds after it swam through the cone; the how to read a fish finder page reads those screens. Live sonar looks ahead and redraws its whole slice continuously, so the picture is a live view rather than a scrolling record. The bottom is a line, a brush pile is a shape, a bass is a bright mark that moves, and the lure is a smaller mark falling through the picture. It is not the forward-looking sonar that cruising boats use to spot shoals. The fish finders hub sets it beside 2D, CHIRP, down and side imaging.

Panoptix LiveScope launched on June 11, 2018, at $1,499.99, under the headline of Garmin’s launch release: “the first and only live scanning sonar for recreational fishing.” Lowrance’s ActiveTarget and Humminbird’s MEGA Live followed within about three years. In the eight years since, live sonar has changed professional bass fishing more than any lure. Wired2Fish’s Shaye Baker writes that “virtually every $100,000 paycheck in the last three years has been won by an angler staring at a screen.”

How does the beam work?

Picture a sheet of sound, not a cone. The beam is about 20° thin from side to side and fanned 120–165° from top to bottom in the forward view, depending on the system. On LiveScope 2 the down and perspective views open to 180°, and the ActiveTarget 2 XL covers a 180° arc. Turn the trolling motor and the sheet sweeps the water like a lighthouse beam, because the transducer points wherever the motor points.

The frequencies sit near one megahertz. MEGA Live 2 runs at 1.05 MHz CHIRP. The LiveScope 2 LVS44 runs at 600–1,050 kHz and the HD model, the LVS42HD, at 850–1,600 kHz. The trade is the usual one in sonar: higher frequency, finer detail, shorter reach. At 30 ft (9 m) the HD model separates two targets 3.8 in (9.7 cm) apart, against 5.7 in (14.5 cm) for the LVS44. But it reaches 125 ft (38 m) to the LVS44’s 250 ft (76 m).

Every system has more than one view.

• Forward: the classic picture, a vertical fan ahead of the boat, for casting to fish you can see.
• Down: the same fan turned under the boat, for vertical jigging and for watching fish beneath the transducer.
• Perspective, Landscape or Scout: the fan laid flat, an overhead view of the water ahead. On LiveScope it is Perspective, and the mount for it ships in the LiveScope 2 box; on MEGA Live it is Landscape, on ActiveTarget Scout. It is the view for finding bait balls and schools across a flat.
• 360: on an HDS PRO, two ActiveTarget 2 XL transducers give a full circle of live view. 360 imaging is the other modern view the tournaments now count.

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How do anglers fish with it?

1. Sweep for fish. Turn the trolling motor slowly across a point, a brush pile or a school of bait and read the marks: bait shows as a cloud, a bass as a single bright mark.
2. Cast past the mark. Land the lure beyond the fish and watch it enter the picture, then let it sink to the fish’s depth.
3. Work it in front of the fish. A fish that turns and follows gets a pause or a twitch. A fish that moves off gets a different bait on the next cast.
4. Use a bait you can hold in the picture. The jighead minnow, a small soft-plastic minnow on a light jig head, is the dominant live-sonar bait; the damiki rig and a minnow on a drop shot do the same job.
5. Follow the fish that moved. Suspended bass that nobody could find before are the fish live sonar was made for, and the boat follows them.

What does each system cost in 2026?

LiveScope 2 went on sale on July 7, 2026, as the successor to LiveScope Plus. Garmin claims 20 percent more resolution and 25 percent more range. Both new transducers plug straight into the display, with no black box. A water sensor switches the sonar off when the transducer leaves the water. On picture quality, Outdoor Life’s Pete Robbins calls LiveScope against MEGA Live “close to a tie, with Garmin getting a slight edge.” Outdoor Life’s test did not include ActiveTarget.

The column to read twice is the last one. LiveScope 2 runs on the sv ECHOMAPs, the Ultra and Ultra 2 and the GPSMAP x3, 8400/8600 and 9000, not on the Striker or the cv ECHOMAPs; the Garmin fish finder page has the whole ladder. MEGA Live 2 runs on none of the Humminbird HELIX units. A plain Lowrance Eagle or HOOK gets live sonar only as the Eagle Eye 9.

What is the cheapest complete setup?

Prices are maker list and dealer prices in October 2026. At Bass Pro the XPLORE 9 bundle has ranged from $2,399 to $2,599 since September. With its Active Imaging 3-in-1 transducer, which adds 2D and side imaging to the live view, the Elite FS 7 is $969.99.

The Eagle Eye 9 is the outlier. One transducer gives focused forward and down live views plus CHIRP and DownScan, on a 9 in screen with charts. It is the best fish finder pick for anyone who wants live sonar under $1,000.

The used market is the other road in. In 2024 Baker priced a used LVS32 transducer at about $300 and an ECHOMAP 93sv at about $400 on Facebook Marketplace. He called it “a 9-inch Garmin LiveScope system for $700.” Expect more used Plus units now that LiveScope 2 is in the shops.

What else do you need: power, mount and screen?

Live sonar adds a load to the electronics battery. MEGA Live 2 is rated at 930 mA nominal and 2.5 A at switch-on. LiveScope 2 draws 32 W at most, about 2.5 A at 12.8 V, on a 7.5 A fuse.

Most anglers put the transducer on the trolling-motor shaft. LiveScope 2 ships with a barrel mount and a perspective shaft mount in the box; the LiveScope Plus shaft mounts are $39.99 and the transom mount $119.99 at Tackle Warehouse. LiveScope 2 integrates with Garmin’s own Force Pro and Force Kraken motors. MEGA Live 2 mounts on Minn Kota’s Ultrex, Fortrex, Maxxum and Edge. Humminbird’s TargetLock, the motorized pole that holds the beam on a target, fits only the Ultrex and Ultrex QUEST. Older TargetLock poles need a MEGA Live 2 adapter. The ActiveTarget 2 XL shaft mount fits 27–33 mm shafts.

The alternative is a dedicated pole that turns the transducer on its own. The Spy Pole, a motorized pole built for Garmin’s 360 transducer that also carries LiveScope, costs $1,999.99–2,199.99, as much as the transducer.

On screen size, Baker writes that on a big boat “a 9-inch unit is about as small as you’ll be able to go to still see adequate detail.” His trick: raise a 9 in screen a foot or so on a mount. From where you stand it then looks as big as a flush-mounted 10 or 12 in. The pros run far more glass, which is why B.A.S.S. caps them at 55 in of total screen.

Why do some anglers want it banned?

The case against it is in Baker’s essay on the pro game: fishing that turns into a screen game, and a generation of tournament anglers who never learned to read a bank.

The NPFL went furthest. From the 2025 season it banned live forward-facing sonar in practice and competition, while 2D, side imaging and 360 stayed legal. Its president, Brad Fuller, said the league did not want “competitive bass fishing to become a technology arms race.” B.A.S.S. and MLF chose limits instead, and those are the compromise in the table below.

The screen does not catch fish by itself, either. Baker has used his father’s Lowrance with ActiveTarget “a good bit,” mostly to see the bottom ahead of the boat, and has “maybe caught 10 or 12 fish as a direct result of seeing them on the screen.” Reading distances and marks on the screen comes with practice.

What do the tournament rules allow?

B.A.S.S. announced its 2026 rule on September 2, 2025. CEO Chase Anderson: “While innovation should remain part of bass fishing, no single technology should define it.” MLF’s 2025 rule also capped every boat on every circuit at two forward-facing or 360° transducers.

MLF’s enforcement is the part to remember. On its Pro Circuit, electronic lock boxes log how long the sonar is unlocked, and a live-streaming camera rides on every pro’s boat. In the Toyota Series and the BFL the co-angler signs off on the boater’s rules each day. The co-angler may bring a portable transducer, but may use it only in the boater’s 3-hour window. In the Toyota Series every minute over the window costs a pound; in the BFL, ten minutes over costs the boater the day’s catch. MLF said it would run polygraph tests in each BFL and Toyota Series division in 2026. Read the current rule book of any circuit before you enter.

Should you buy it?

1. Do you fish for fish you cannot see? Suspended summer bass, crappie over brush and roaming schools are what live sonar finds. Inshore saltwater anglers point it at docks, bridges and reefs, and it works best in at least 8 ft (2.4 m) of water. If you fish shallow cover, a 2D and side-imaging unit does more for the money.
2. Will your display run it? Check the “Runs on” column first. If the answer is no, the transducer price is only half the bill.
3. Under $1,000? The Eagle Eye 9 Live is the only complete live sonar at that price.
4. Do you fish tournaments? Then buy for the rules you fish under: one transducer on the Elites, a 3-hour block on most MLF circuits, none in the NPFL under its 2025 ban.
5. Do you fish from a kayak? Most kayaks have no trolling motor to carry it, so the transducer usually goes on a rotating arm, and the extra electronics need more power and tidier cables, the usual kayak fish finder setup.

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