Best Trolling Motor for Inflatable Boat: 5 Picks by Mount Rating

For most small inflatable fishing boats, the best trolling motor is a light 30–36 lb thrust transom motor. The Watersnake Venom SXW 34 is the lightest full-size option here, but it isn't sold on Amazon.com, so our top pick you can buy on Amazon is the Newport NV-Series 36 lb: 18 lb, rated for salt and fresh water. If you only fish freshwater, the Minn Kota Endura 30 is the simple budget choice.

The thrust is the easy part. What rules motors out on an inflatable is the boat's own rating: maximum motor weight, maximum power and minimum shaft length. Intex, for example, lists an 18 lb maximum motor weight for its Excursion, Seahawk and Challenger boats, which is lighter than several popular trolling motors, including Intex's own.

This guide is research-based. We compared manufacturer specifications, owner's manuals, Intex and Sea Eagle boat ratings and current retailer listings, and read owner forum threads about motors on inflatables. We haven't installed or run these motors ourselves. The star ratings are our research scores, not test results.

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Best Trolling Motors for Inflatable Boats: Quick Comparison

Motor	Thrust	Shaft	Motor weight	Max draw	Water
Watersnake Venom SXW 34	34 lb	30 in (US listings)	5.8 kg / about 13 lb (Watersnake, 26 in version)	34A	Salt and fresh (per Watersnake)
Newport NV-Series 36 lb	36 lb	30 in	18 lb	29A	Salt and fresh
Minn Kota Endura 30	30 lb	30 in	19 lb	30A	Freshwater
Newport NV-Series 55 lb	55 lb	30 in	23 lb	52A	Salt and fresh
Intex 68631E	40 lb	39 in (one retailer)	23 lb (one retailer); Intex lists 25.94 lb	Not stated	Salt and fresh (one retailer)

All five are 12V transom-mount motors with a hand tiller. Specs come from the manufacturer and retailer pages named in each section, checked in October 2026. Where sources disagree, we give the narrower figure and say so.

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What to Check on Your Inflatable Before You Buy

Check these four ratings on your boat's capacity plate, manual or product page before you compare motors. They matter more than thrust.

1. Maximum motor weight. Intex's rating table lists 18 lb for the Challenger 3 and 4, Seahawk 2, 3 and 4 and Excursion 2, 3, 4 and 5, 30 lb for the Seahawk II 3 and 40 lb for the Mariner 4. A heavy motor on a light mount sags the stern and lowers the transom toward the water.
2. Maximum power. The same Intex table gives 1.5 hp for the Excursion, Seahawk and Challenger boats. An iboats owner who mounted a 2.5 hp gas motor on an Excursion 5 reported the motor mount flexing down under throttle, and forum members pointed to that 1.5 hp limit.
3. Minimum shaft length. Boats with big tubes need a longer shaft so the propeller stays below the surface. Sea Eagle's manual for the 285fpb frameless pontoon lists a minimum 30 lb thrust and 32-inch shaft for trolling motors, and warns that short shafts can pull air down to the propeller.
4. The motor mount itself. Most inflatables need a separate mount board. Intex sells a Trolling Motor Mount Kit (68624EP) made of marine plywood with aluminum arms, listed for the Challenger 3, Seahawk 2, 3 and 4, Excursion 4 and 5 and Mariner 3 and 4. Intex says it fits motors up to 3.5 hp, but the boat's own rating is the lower limit you have to stay under.

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#1 Lightest Option (Not on Amazon): Watersnake Venom SXW 34

4.4/5our score

The Venom SXW 34 is the best fit for most small inflatables because it's light. Watersnake's own spec table lists the 26-inch-shaft Venom SXW 34 at 5.8 kg (about 13 lb), well under Intex's 18 lb limit. The US listings we checked (Scheels and a second retailer) sell a 30-inch shaft version and don't state its weight.

Specs across those sources: 34 lb thrust, 12V, 5 forward and 3 reverse speeds, an extendable hand tiller and a 2-blade weedless prop. Watersnake lists a 7.5–34A draw range and saltwater construction. One retailer describes it as salt-water ruggedized, while the Scheels listing doesn't mention salt water.

Sea Eagle names the Watersnake Venom 34 as a suitable motor for its 285fpb in the boat's manual. The same manual lists a 32-inch minimum shaft, though, and the Venom SXW 34 listings we found are 26 or 30 inches. If you own a 285fpb, ask Sea Eagle which Venom version it means before you buy.

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#2 Best on Amazon (and for Salt Water): Newport NV-Series 36 lb

4.3/5our score

The NV-Series 36 lb is our pick among motors sold on Amazon, and the one to choose if your inflatable goes in salt or brackish water. Newport lists it for salt and fresh water, with 36 lb thrust, a 30-inch shaft, 18 lb weight, 5 forward and 3 reverse speeds, a 29A max draw and a 40A circuit breaker. A second retailer page confirms the 30-inch shaft and 40A breaker.

At 18 lb it sits exactly at Intex's limit for the Excursion, Seahawk and Challenger boats, and well inside the 30 lb and 40 lb ratings of the Seahawk II and Mariner 4. Newport backs it with a 2-year limited warranty.

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#3 Best Budget Freshwater Pick: Minn Kota Endura 30

4.2/5our score

Minn Kota's Endura 30 (model 1352270M, sold by some retailers as the Endura C2 30) is the familiar budget choice for freshwater inflatables. Minn Kota lists 30 lb thrust, a 30-inch shaft, 19 lb weight, 30A max draw, 5 forward and 3 reverse speeds and a push-to-test battery meter. The composite shaft is guaranteed for life, and the motor has a 2-year warranty. A second retailer confirms the model number, thrust, shaft and draw.

Two limits to know. It's freshwater only. And at 19 lb it's 1 lb over Intex's 18 lb rating for the Excursion, Seahawk and Challenger, so it suits the Seahawk II and Mariner 4 or other boats with a higher motor-weight rating. Sea Eagle's 285fpb manual names the "Minn Kota Endura 30" as a suitable motor; Minn Kota's page shows 36 and 42-inch shaft options for the Endura line, which would meet that boat's 32-inch minimum. Confirm the exact model number before ordering.

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#4 Best for Larger Inflatables: Newport NV-Series 55 lb

4.1/5our score

If you run a heavier 4-person inflatable with two anglers and gear, or fish where wind and current push you around, the NV-Series 55 lb gives you more thrust in reserve. Newport lists 55 lb thrust, a 30-inch shaft, 23 lb weight, a 52A max draw and a 60A breaker, rated for salt and fresh water. A second retailer page confirms the 30-inch shaft and 60A breaker.

More thrust doesn't mean much more speed on an inflatable. Sea Eagle's 285fpb manual explains that its displacement hull tops out around 4 mph, and quotes Minn Kota saying its props are pitched to push a boat at about that speed. Extra thrust helps against wind and current, and it costs battery: at full power, 52A drains a battery almost twice as fast as a 30A motor.

At 23 lb, it's over Intex's 18 lb limit for the Excursion, Seahawk and Challenger. It fits the weight ratings of the Seahawk II (30 lb) and Mariner 4 (40 lb), but check the boat's power rating too.

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#5 For Intex Mariner 4 Owners: Intex 68631E

3.8/5our score

Intex's own trolling motor (68631E) is built to pair with the Intex mount kit. Intex lists 40 lb thrust, 12V, 5 forward and 3 reverse speeds, and says the mount kit is sold separately. A retailer listing adds a 39-inch shaft, a tilting tiller that extends, a battery meter, Weed Escape mode, salt and freshwater use and a 2-year Intex warranty.

The catch is weight. One retailer lists 23 lb and Intex's page shows 25.94 lb, which may be a shipping weight. Either figure is over the 18 lb maximum Intex lists for the Excursion, Seahawk and Challenger boats, yet Intex markets the motor as compatible with several of them. The sources disagree, so we'd follow the boat's own rating. Of the boats Intex lists as compatible with this motor, only the Mariner 4 (40 lb) has a weight rating above 23 lb in the Intex table we found. If you own an Excursion 5 or Seahawk, check with Intex before you buy it.

The retailer listing recommends a deep cycle 12V battery of at least 115 amp-hours, which is heavy for a small inflatable.

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How Much Thrust Does an Inflatable Boat Need?

30–36 lb of thrust is enough for most 1–2 person inflatables. Sea Eagle's minimum for its one-person 285fpb is 30 lb, and Intex's own motor, built for its 3–5 person boats, is 40 lb.

Go up to 45–55 lb only for a loaded 4-person boat or regular wind and current, and only if the boat's weight and power ratings allow it. Because inflatables are displacement hulls, extra thrust buys control in wind more than speed. For other boat types and the full thrust, voltage and shaft-length charts, see our trolling motor size chart.

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What Battery Should You Use With an Inflatable?

Use a 12V deep-cycle battery, sized for your runtime and for what the boat can carry. Sea Eagle's 285fpb manual recommends a deep-cycle battery of about 20–120 Ah, and a Group 24 or smaller lead-acid battery for that boat. It describes Group 24 batteries as about 50 lb and Group 27 as about 60 lb, and says the bigger ones can be hard to manage safely in a small inflatable.

To estimate runtime, Sea Eagle's manual divides amp-hours by the motor's draw and recommends using no more than 85% of capacity:

Runtime (hours) ≈ battery Ah ÷ motor amps × 0.85

A 60 Ah battery on a 30A motor at full speed gives about 1.7 hours. At lower speed settings the draw falls and the runtime goes up.

The same manual says lithium iron phosphate (LiFePO4) batteries are much lighter, a real advantage in an inflatable, but they need a lithium charger. It also notes that Watersnake warns output above 14.5V could damage switches, and that Minn Kota advises against long runs above 85% speed on lithium. Put a circuit breaker between the battery and motor; Sea Eagle points out it's a Coast Guard requirement. Newport lists a 40A breaker for its 36 lb motor and 60A for the 55 lb.

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How to Mount a Trolling Motor on an Inflatable Boat

1. Use the boat maker's motor mount. Intex's 68624EP kit attaches to compatible Intex boats and comes off for storage. Sea Eagle's 285fpb uses a mount that slides into grommets on the rear chamber before it's fully inflated.
2. Clamp the motor and set the depth. Set the shaft so the propeller stays submerged without pulling air down, but not so deep it hits bottom near shore.
3. Set the trim. Sea Eagle recommends the innermost trim setting on the 285fpb.
4. Balance the load. Put the battery where it levels the boat. If too much weight sits at the back, the bow rises and steering gets harder.
5. Make steering easier. On a one-person pontoon the motor sits right behind your seat. Sea Eagle suggests a side steering arm or a tiller extension with a universal joint.

For kayaks, which mount motors differently, see our guide on how to add a trolling motor to a kayak.

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Frequently Asked Questions

Can I put any trolling motor on an inflatable boat?

No. Stay within the boat's maximum motor weight and power, and match its minimum shaft length. Intex lists 18 lb and 1.5 hp for its Excursion, Seahawk and Challenger boats. The 40 and 55 lb motors in this guide both weigh more than that.

Do I need to register an inflatable boat with a trolling motor?

Often, yes. Sea Eagle's 285fpb manual says most states require a boat with a motor, including a trolling motor, to be registered. Check your state's boating agency. Sea Eagle also notes that registration stickers don't stick well to inflatables, and suggests gluing on a plate.

How fast will a trolling motor push an inflatable boat?

Not much faster than walking pace. Sea Eagle puts the 285fpb's hull speed at about 4 mph, and says a bigger motor won't raise it much.

Is a saltwater trolling motor worth it on an inflatable?

Yes, if you fish salt or brackish water. Freshwater models like the Minn Kota Endura aren't built for salt. The Newport NV-Series is rated for both, and Watersnake lists the Venom SXW as saltwater-rated.

Is a trolling motor for a kayak the same as one for an inflatable boat?

Often the same motors fit both, but the mount differs. Kayaks usually need a rail or stern bracket, while inflatables use a motor mount board. Our best trolling motor for kayak guide covers the kayak side.

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The Bottom Line

Start with your boat's capacity plate. If it says 18 lb (Intex Excursion, Seahawk, Challenger), the Newport NV-Series 36 lb sits exactly at the limit and is the pick on Amazon; the lighter Watersnake Venom SXW 34 gives you margin but is sold through Watersnake dealers, not Amazon. If your boat is rated for heavier motors, the Minn Kota Endura 30 is the budget freshwater pick and the Newport NV-Series 55 lb adds thrust for big, loaded boats. Choose the Intex 68631E only for an Intex boat rated for its weight, like the Mariner 4.