Best Trolling Motor Thrust for Big Lakes

Choosing the right trolling motor thrust for the vast, often unforgiving waters of North Dakota's big lakes can feel like a daunting task. Many anglers find themselves battling powerful winds and currents, or worse, running out of juice far from shore, all because their motor simply isn't up to the challenge. This guide will walk you through everything you need to know about selecting the optimal trolling motor thrust, ensuring you have the power and control necessary for a successful and enjoyable fishing trip on these magnificent waters.

The Big Lake Challenge: Why Thrust Matters in North Dakota

Fishing on sprawling reservoirs like Lake Sakakawea or the dynamic waters of Devils Lake isn't like puttering around a small pond. These are serious bodies of water, known for their unpredictable weather, strong winds that can whip up waves in minutes, and significant currents in certain areas. An underpowered trolling motor won't just make your day frustrating; it can compromise your ability to maintain position, control your drift, or even safely navigate back to calmer waters.

Understanding What "Thrust" Really Means

When we talk about a trolling motor's "thrust," we're referring to the amount of pushing or pulling power it can generate, measured in pounds (lbs). It's essentially the force that moves your boat through the water. Think of it like horsepower for your car, but for low-speed maneuvering and precise boat control. More thrust means more power to combat external forces like wind and current, and ultimately, better command over your vessel. It allows you to hold your boat over a prime fishing spot even when the breeze is trying to push you off course, or slowly work a shoreline against a mild current without constantly fighting the elements.

The Impact of Wind and Current on Thrust Needs

North Dakota's big lakes are notorious for their wind. A calm morning can quickly turn into a white-capping afternoon, and if your trolling motor can't keep up, you'll be blown off course, making precise lure presentation impossible. Strong currents, particularly in river sections or areas influenced by dam operations on the Missouri River system, also demand robust thrust. Imagine trying to hold your boat steady over a walleye school in a stiff breeze with only a 50-pound thrust motor – it's like trying to push a car uphill with one hand. You'll spend more time fighting your boat than actually fishing, draining your battery rapidly and building up frustration. The right amount of thrust gives you the confidence to fish effectively, even when Mother Nature decides to throw a curveball.

Finding Your Perfect Match: Calculating Thrust for Your Boat

Determining the ideal thrust isn't an exact science, but there are some excellent guidelines and factors to consider that will get you very close. It's not just about your boat's length; its weight, how much gear you typically carry, and the types of conditions you usually fish in all play a crucial role.

Boat Size and Weight: The Foundation of Your Calculation

The primary factor in choosing trolling motor thrust is your boat's size and weight. A general rule of thumb is to allow for at least 2 pounds of thrust for every 100 pounds of fully loaded boat weight. "Fully loaded" is key here – don't just weigh the boat itself. Add the weight of your motor, fuel, battery bank, all your fishing gear, and the maximum number of passengers you typically have on board.

Let's break that down:

• A smaller 16-foot aluminum fishing boat, fully loaded, might weigh around 1,500-2,000 pounds. This would suggest a minimum of 30-40 lbs of thrust.
• A larger 18-20 foot fiberglass bass boat or multi-species rig, easily weighing 3,000-4,000 pounds or more when fully rigged, would push you into the 60-80+ lbs thrust range.

However, this is just a starting point. On North Dakota's vast waters, you'll often want to err on the side of more thrust, not less, to comfortably handle conditions.

Accounting for Wind and Current: The North Dakota Factor

This is where fishing in North Dakota differs significantly from smaller, calmer waters. The "2 pounds per 100 pounds" rule is great for calm conditions. For big lakes known for strong winds and currents, you'll want a significant buffer. Many seasoned anglers on Lake Sakakawea or Devils Lake recommend adding at least 10-20% more thrust than your initial calculation, especially if you plan to fish frequently in windy conditions or strong current areas like the Missouri River embayments.

Consider this: if your base calculation suggests 50 lbs of thrust, upgrading to a 65-70 lb thrust motor provides that crucial extra power to battle a 20 mph gust or hold a jig precisely over a structure in a mild current. That extra thrust isn't just about speed; it's about control, the ability to maneuver, and conserving your battery by not having to run the motor at maximum power constantly.

Your Fishing Style: How You Plan to Use Your Trolling Motor

Your personal fishing style also impacts your thrust needs.

• Stationary Jigging/Live Bait Rigging: If you spend a lot of time holding your boat over specific structure or contour lines, especially in windy conditions, higher thrust is invaluable. It allows the motor to "anchor" you digitally (with GPS spot-lock features) without constantly roaring at full power, saving battery and reducing noise.
• Slow Trolling/Crab Walking: For those who like to slowly troll crankbaits or pull spinner rigs along breaklines, sufficient thrust ensures you can maintain a consistent, slow speed, even against light wind or current.
• Covering Water Quickly: While not a primary function of trolling motors, if you occasionally use it to reposition fairly rapidly between spots, more thrust will achieve this more efficiently, again, with less battery drain than running a smaller motor at max throttle.

Think about how you typically fish. Do you chase walleye on Lake Sakakawea Walleye Fishing Spots where conditions can change rapidly? Or are you focused on Devils Lake Perch Fishing Spots where holding still over a school in a brisk wind is paramount? Your answer will help justify leaning towards the higher end of the thrust spectrum.

Practical Thrust Recommendations for North Dakota Anglers

Based on these factors, here's a general table of recommendations, but always round up if you're on the fence or frequently fish in challenging conditions:

Boat Length (feet)	Approximate Dry Weight (lbs)	Fully Loaded Weight Estimate (lbs)	Minimum Recommended Thrust (lbs)	Strong Wind/Current Recommended Thrust (lbs)	Common Voltage
14-16	500-1000	1200-2000	45-55	55-70	12V
16-18	1000-1500	2000-3000	55-70	70-80+	12V or 24V
18-20	1500-2000	3000-4000	70-80	80-100+	24V or 36V
20+	2000+	4000+	80-100	100-120+	36V

Remember, these are estimates. Always check your boat's actual wet weight and consider the heaviest load you'll typically carry. You can find a vast array of trolling motors at various thrust levels, from manufacturers like Minn Kota and MotorGuide, at retailers like Bass Pro Shops, or by browsing online platforms like Amazon.

Beyond Thrust: Power, Features, and Practical Considerations for ND Anglers

While thrust is king, it's part of a larger system. To get the most out of your trolling motor on North Dakota's big lakes, you also need to think about power sources, shaft length, and smart features that can make your fishing more productive and less stressful.

Voltage and Battery Life: The Unsung Heroes of Big Water Fishing

More thrust almost always means more power draw, which translates to needing a higher voltage system and robust batteries.

• 12-volt systems are common for motors up to about 55-60 lbs of thrust. They typically require one deep-cycle marine battery. While simple, running a 12V motor at high thrust in rough conditions will drain a single battery quickly.
• 24-volt systems (two 12V batteries wired in series) are standard for motors in the 70-80 lbs thrust range. This offers significantly more power and runtime, making it a popular choice for many medium-to-large North Dakota fishing boats.
• 36-volt systems (three 12V batteries in series) are for the big boys – 100+ lbs of thrust motors. This setup provides maximum power and the longest runtimes, essential for serious tournament anglers or anyone fishing expansive waters all day in challenging conditions.

For longer days on the water or when expecting strong winds, having enough battery capacity is paramount. Consider investing in high-quality deep-cycle marine batteries and a reliable onboard charger. Nothing ruins a fishing trip faster than a dead trolling motor battery when you're miles from the ramp. Many anglers researching their options will compare different battery types and charging solutions on sites like Amazon or specialty marine stores. Best Trolling Motor Battery for All-Day Fishing discusses battery choices in more detail.

Shaft Length: Don't Skimp on This Critical Measurement

On big, windy lakes, waves can be a real issue. If your trolling motor's shaft is too short, the propeller will come out of the water in choppy conditions, losing thrust and control. As a general rule, your trolling motor propeller should remain submerged at least 12 inches below the water line in rough conditions.

• Measure from the top of your boat's bow (where the motor mounts) to the waterline. Then, add about 20 inches to that measurement. That's a good starting point for your minimum shaft length.
• For example, if your bow to waterline measurement is 20 inches, a 40-inch shaft might be sufficient for calm days, but a 54-60 inch shaft would be much better for handling waves on Lake Sakakawea's Big Water. Many anglers fishing Lake Oahe Walleye Fishing Spots also swear by longer shafts due to the potential for large swells.
• When in doubt, go longer. You can always adjust a longer shaft higher, but you can't magically extend a short one.

GPS Spot-Lock and Advanced Features: Your Best Friend on Big Lakes

Modern trolling motors offer incredible features that are particularly beneficial on North Dakota's expansive and often windy lakes.

• GPS Spot-Lock (or Anchor Mode): This is a game-changer. With the push of a button, your motor uses GPS to automatically hold your boat's position, even in wind and current. This frees you up to focus on fishing, rather than constantly steering. It's especially invaluable when you find a hot spot or are trying to fish a specific piece of structure.
• Integrated Sonar/Transducer: Many motors now come with built-in transducers that connect to your fish finder, providing clear views of what's directly beneath your trolling motor. This is excellent for target acquisition and staying on fish.
• Remote Control/Foot Pedal: Decide whether a wireless remote or a traditional foot pedal suits your fishing style best. Both offer excellent control, but personal preference plays a big role.
• AutoPilot/Navigation: Some motors can follow predetermined routes or contours, allowing for hands-free trolling, which is fantastic for working long breaklines or shorelines efficiently.

These features, especially GPS spot-lock, make higher thrust motors even more efficient. A motor with ample thrust can maintain a spot-lock position with less effort, meaning less battery drain over the course of a long fishing day. This is a crucial consideration for anyone planning to spend significant time on large bodies of water. You'll find a wide range of these feature-rich motors when looking at different models from brands available at major sporting goods stores like Bass Pro Shops.

Choosing the right trolling motor thrust for North Dakota's big lakes is an investment in your fishing success and enjoyment. By carefully considering your boat's weight, the challenging conditions you'll face, your fishing style, and the supporting power system, you'll be well-equipped to tackle whatever these amazing waters throw your way.

Disclaimer

This article is for general informational purposes only and does not constitute professional advice. Laws, prices and regulations vary by location and change over time. Consult a qualified professional for guidance on your specific situation.