Size Of Trolling Motor An Inflatable Boat: What Is Best

Inflatable boats are lightweight boats that are built with flexible gas tubes. These boats are suitable for transport in emergencies or for short distance maneuvering. Inflatable boats are also compact and deflating for efficient storage and processing. Therefore, they are often used as life rafts for ships, aircraft, or leisure activities. Over the years, numerous upgrades have been made to the appearance and fabrics used to build modern inflatable boats. Do you know what size the trolling motor for an inflatable boat is?

About Trolling Motors

what size trolling motor for inflatable boat

Trolling engines are the perfect tool for moving and maneuvering your boat when you do not want to start the loud outboard engine of your boat. The trolling motors are often attached to the bow or transom, and batteries are powered and controlled by hand, foot pedal, or remote control.

The trolling engines today enable anglers to fish a shoreline quietly and methodically. Trolling motors allow a boat to stand in one place without a physical anchor when fighting wind or current. Tilt the outboard engine out of the water to explore areas that otherwise access too shallowly by using the trolling motor.

In the 1980s, trolling motors entered the fishing scene, and since then, motor advances have taken place. Current options include trolling engines with Sonar Transducer and temperature sensors, trolling engines connecting your fish-finder electronics, and trolling motors that can be placed at a single point based on the GPS position.

What Size Trolling Motor For Inflatable Boat

what size trolling motor for inflatable boat

Bigger is nearly always better. Larger boats need more juice, but when choosing a trolling engine, we recommend considering wave action, wind, and current. Erring on the stronger side has its benefits because stronger motors work at lower speeds more efficiently and offer a safe cushion for wind, waves, and current handling.

Trolling motors differ slightly in the measurements required to purchase correctly. Trolling engines need not be aligned with the bottom of the hull to operate at high performance. In order to perform a trolling motor correctly, the motor compartment must be submerged 10″-12 “below the water surface. This measurement will be useful later.

You still have to start measuring at the top of the transom, but you only have to step to the waterline. This measurement will vary according to weight, sea conditions, and boat type. In this measurement, add 10 “below the water to the recommended minimum shaft length. To make it more comfortable, add 12” to the waterline measurement. If the length is equal to or in between sizes, move into the longer length.

You have to measure from the bottom of the motor head to the propeller housing to measure the shaft length on a rolling engine. This length may vary by an inch or two, but the rated motor shaft length may be round to the closest number.

It is instrumental in knowing how to correctly measure the motor shaft length and measure the correct length of your inflatable boat. It is important not only for new owners of the dinghy but also for current owners who are looking to upgrade.

Consumption Of Power

Consider how big a boat is, how much battery capacity you can safely install to meet the energy requirements of a trolling engine, and whether you can charge batteries when it starts. Check the amplifier drawing of the models in mind. 

Model 24V with 54 lb. The thrust can draw the only 28A, while the model of 12V can be 44 lb. Can draw 36A from the push. The thumb rule is that bigger motors require more battery capacity, and if you fish with a 16′ or longer boat from dawn to dark, you are likely to want 24V. Serious anglers who spend a lot of time on the water will enjoy a 36V engine.


Trolling engines are rated in pounds. As a rule 72 to 75 lb thumb. The thrust is approximately one horsepower or 746W electricity. A typical 12V engine which draws 60A uses about 720W. The power equation is simple: the higher the voltage, the higher the thrust. 

Trolling engines are available in 12V, 12/24V, 24V and 36V versions and the most powerful with a capacity of over 100 lb. Heavy ships like pontoon boats are powerful enough to move. The maximum thrusts are around 12V/55 lb at different voltages. And it’s 24V/80 lb.

How Quickly Can An Electric Trolling Engine Move An Inflated Boat?

Electric trolling engines can propel an inflatable boat at a maximum of around 5 MPH and not more quickly. The speed to be reached is not linear to the trolling engine or to the number of trolling engines that you mounted on a boat. For example, mounting two motors of 55 lbs won’t move your boat 2x as quickly. 

Even the 86 lbs thrust engine will not move your boat 1.5 times faster than the 55 lbs one. However, there is a significant price increase with electric motors. An 86 lbs one will cost far more than 55 lbs and two 12V batteries will be needed.

How To Choose What Size Is A Trolling Motor For Inflatable Boat

Looking for a new trolling engine is excellent. I’m sure you can’t wait to buy it and hit it as quickly as possible. Don’t just pick up the first trolling engine you see.

If you do, you can end up with an engine that is too weak to do anything – or an engine too heavy for your boat. You may end up with a trolling engine too short of submerging, or a motor that drags along the seabed.

So how do you select the perfect motor for your swelling boat? Here’s how to select what size trolling motor is for inflatable boat.


The last thing you want is a low-powered trolling engine. If that’s the case, you ‘re better off using paddles. Make sure you get an engine with enough thrust to avoid this. You can think of thrust as your engine’s “power.” The more thrust your engine gets, the stronger it gets. However, the higher thrust allows your engine to bear more weight.

Thrust is measured by lbs. The right amount will depend on some things for your boat, but weight is the biggest factor. The thumb rule is every 100 lbs. You need 2 lbs of the thrust of boat weight.

Let’s say your RIB boat weighs around 1200 lbs, and you need at least 24 lbs of thrust, including you and your device. Your motor should be able to propel you comfortably at 3-4 mph. The condition is another factor that comes into play. You ‘re going to want more than the minimum if you take your boat to rough waters.

Please be aware that the weight of 100lbs to 2lbs only works for calm waters. Rough waters or strong winds may take your boat away if your motor has only the lowest. So get a little more momentum if you expect it.


The next thing you have to check is your battery. It needs the right amount of electricity to keep your engine running in top condition. You could run into some bad problems without it. You need one battery in your trolling motor for every 12 volts. The more power your engine has, the more volts it needs. So prepare for up to 3 batteries if you have a 100lbs thrust engine.

If you plan on a long fishing trip, you might want to have a powerful engine. You don’t need extra power, but it is important to have extra battery life. You will have enough to cruise for days with three batteries in use.


The length of your shaft is very important to consider. You want your shaft to be long enough to get the propeller into the water, but not long enough to slow down your boat. Get it wrong. You’re going to have a very inefficient engine. Worse, your engine will not be able to move your boat at all.

While there are some adjustable shafts, it is good to know the correct length before buying one. You can check the charts online to know your boat’s correct shaft length.


Stern trolling engines are the most popular by far. They ‘re the most affordable and easy to install. Finding a good mount for stern trolling motors is very easy. It can be easier to steer bow trolling engines, but they are more expensive and difficult to install. This is particularly true for inflatable boats as they don’t have a flat bow. First, before setting up your bow trolling engine, you will have to install a plate.

Engine trolling motors (if you have one) is attached to the outboard motor. With these, you can switch to a still and maneuverable trolling between the loud and powerful outboard motor, which the Navy SEALs like.


There are two types of trolling motors: hand-driven and foot-driven—the advantages and disadvantages of both. For one thing, hand controls are quick to respond. You can also keep your boat nice and clean.

Foot controls on the flip side are easier to use. Moreover, they are free to do other things. Both are no better than the other. Everything is a matter of preference.

Final Words

The weight and dimensions are an apparent attribute when considering trolling engines for inflatable boats. Inflatable boats are generally rather small and light, so the trolling motor has to have space and not overweight, or the intention of a trolling motor would defeat first of all.

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