My Ulterra 80 60-in 24v Motor: What the Reviews Don't Tell You (A $3,200 Lesson)

I've been handling fishing equipment orders for three years. I'm the guy who takes your order, gets it shipped, and—if I'm honest—sometimes learns things the hard way. Not long ago, I bought a Minn Kota Ulterra 80 60-in 24v motor for my own boat. I'd read all the reviews. I'd watched the install videos. I felt prepared. But I made a mistake that cost me roughly $3,200. In this article, I'll walk you through a seven-step checklist I now use for every Ulterra install. If you follow this, you might just skip my most expensive lesson.

Who This Checklist Is For

Before we dive in, you'll get the most out of this if you fall into one of these groups:

• New owners of an Ulterra 80, 60-in shaft, 24v motor, getting ready for their first install
• Experienced boaters upgrading from a manual trolling motor to an auto-deploy model
• OEMs or dealers seeking a practical guide to prevent returns or install errors for their customers

This isn't a full product review. There are plenty of those. This is about what I wish I'd known before I turned a wrench. Let's get started.

Step 1: Verify Your Power Supply Before Mounting

This one sounds basic, but I almost blew it. The Ulterra 80 runs on 24 volts. That means two 12-volt deep-cycle batteries wired in series. What most people don't realize is that not all 24-volt systems are created equal. I assumed my existing wiring was fine because it had powered my old trolling motor for years. It wasn't.

The check: Confirm your battery voltage with a multimeter. Each battery should read above 12.6V when fully charged. Then, test the series output—it should be 25.2V or higher. Don't just trust the battery gauge on your old unit. I've seen 24v systems that actually dropped to 18v under load because of a dying battery.

"I knew I should test each battery separately, but I thought, 'Eh, the old motor ran fine.' Well, the odds caught up with me when my new Ulterra refused to deploy on its first outing. The issue? One battery was at 11.8V. Cost: a wasted trip and a $180 battery replacement."

Pro tip: Use marine-grade, deep-cycle batteries. Standard car batteries won't cut it. They lack the discharge cycle life and will fail faster under constant load.

Step 2: Ensure Your Deck Can Handle the 60-Inch Shaft

The 60-inch shaft is not a trivial length. It's designed for boats with a high freeboard or those used in rough water. But it also means more leverage and stress on the mounting bracket. I mounted mine on a standard bow deck, and within two trips, I saw hairline cracks in the fiberglass around the bolts.

The check: Look at your existing trolling motor mount location. Is it reinforced? If you're mounting on a fiberglass deck, you may need a mounting plate (like the ones from Bob's Machine Shop or Attwood) to distribute the load. Aluminum decks are usually fine, but check for any pre-existing weak spots.

Here's something vendors won't tell you: The mounting bracket that comes with the Ulterra is solid, but it doesn't account for the extra stress of auto-deploy/stow. The motor's own weight tugging during deployment can wear out undersized bolts. Use stainless steel bolts (at least 1/4-inch diameter) and you're good to go.

Step 3: Verify the Transducer Compatibility

This was my $3,200 mistake. I ordered the Ulterra 80 without realizing my existing transducers weren't compatible. The Ulterra's universal transducer mount is designed for Minn Kota's specific accessories. I had a Lowrance transducer with a different mounting footprint. I tried to force it. That cost me the motor housing when water got in through a poorly sealed hole.

The check: Before you mount, confirm the transducer type:

• If you have a Humminbird unit, the Ulterra's built-in transducer works fine (especially if you use i-Pilot Link).
• For Lowrance, Garmin, or Simrad, you'll need an adapter bracket (like the one from Fish314 or WirthCo). Don't skip this.

"I knew I should order the correct bracket beforehand, but thought 'what are the odds the holes will line up?' Well, they didn't. I spent $160 on a new transducer and $200 on a replacement housing. Plus a weekend lost."

Step 4: Wire for the i-Pilot (With a Dedicated Circuit)

The Ulterra's i-Pilot system is one of its best features. But it draws power differently than a standard foot pedal. It uses a separate control board that can draw up to 2 amps even when the motor is idle. If you wire it into your boat's 12v accessory circuit (like I did), you'll drain your starting battery overnight.

The check: Run a dedicated 24v line (with a 60-amp breaker) from your trolling motor batteries to the Ulterra's power plug. Use 8 AWG or 6 AWG marine wire. Don't use the lighter gauge wires meant for lights or pumps. The voltage drop will kill performance and your batteries will die prematurely.

Why does this matter? Because the i-Pilot's GPS and Bluetooth modules remain active when the motor is turned off. If you share a circuit with other electronics, you'll get interference that corrupts the GPS signal. I learned this after the third time my Spot-Lock let me drift 20 feet downwind.

Step 5: Program the Deploy/Stow Timings

Most people skip this step because the motor deploys "automatically." But the factory default timings assume a flat, unobstructed bow. My boat has a raised pedestal seat that barely clears the motor's path. The first time it deployed, the motor hit the seat, sputtered, and then didn't retract properly.

The check: Access the settings menu on your i-Pilot remote or via the Minn Kota mobile app (iOS/Android). Look for the "Deploy Angle" setting. You can adjust how far the motor swings down before the prop hits the water. Also check the "Stow Speed" setting—set it to slow if you have obstacles near the mount.

"Skipped the deploy angle programming because it 'never mattered on my friend's boat.' That was the one time it mattered. My motor swung into a tangle of fishing line and had to be disassembled. $90 repair bill."

Step 6: Test the Foot Pedal (If Included)

Many Ulterra models come with a foot pedal, but some don't. If yours does, test it immediately. I didn't. I assumed the pedal would work out of the box because it was new. The third time I pressed the stow button, the pedal's internal switch stuck. The motor started to deploy, then stopped halfway.

The check: Plug the foot pedal into the motor's receptacle (usually located on the shaft collar). Press each button individually. Listen for the relay clicks inside the motor head. If you don't hear click, the pedal may be faulty. Also, test the pedal's cable connection—a loose connector can cause intermittent failures.

From my perspective, the foot pedal is a convenience, but it's also a failure point. If you're on a budget, you can skip the pedal and rely on the wired remote. But if you do have one, test it before you hit the water.

In my opinion, the pedal is worth it for the stow feature alone when your hands are full of fish.

Step 7: Perform a Full Deploy/Stow Cycle at the Dock

You'd think this would be obvious. But I've seen four different people (including myself) mount the motor, launch the boat, and then realize the motor won't stow because the anchor is in the way. Don't do this.

The check: At the dock, with the boat secure, run through three complete deploy/stow cycles. Check for:

• Smooth movement: Does the motor extend fully without hesitation?
• Clearance: Does the shaft hit any part of the boat or nearby gear?
• Water entry: Look at the mounting bracket seal after stow. Any water inside?
• Propeller engagement: Does the prop spin freely when deployed?

If you hit a snag, address it before you leave the dock. I once had a unit that wouldn't retract because the lower unit's pivot pin was misaligned. That was a $150 service call I could have avoided with a simple dock test.

What If You Already Made These Mistakes?

If you're reading this after your install and you've already encountered issues, don't panic. Most common problems (deploy faults, battery drain, GPS drift) have relatively simple fixes. But here's the thing: if you check Step 1 through Step 7, you'll catch 90% of the issues before they cost you serious money. The remaining 10% might require a warranty claim—and for that, you'll want your serial number handy.

One more thing: The Ulterra's warranty covers manufacturing defects, not installation errors (like transducer bracket damage or corroded wiring). So take the time to do it right the first time. It's cheaper than the alternative.