Formula 350 SS owner interview: shares the positives of the Lightning system by Humphree

A Formula 35SS owner shares the positives of boating with the Lightning system by Humphree, covering installation, comfort, trim control and everyday use.
24 Apr

Edited April 24, 2026

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This article has been created in partnership with Humphree

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Humphree Lightning trim tab and control unit sat on a sea background

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An owner's perspective

A Formula 350 SS owner shares the positives of boating with the Lightning system by Humphree, discussing installation, day-to-day usability, ride comfort and automatic trim control. In this owner interview, Andy Sweet outlines the benefits he has experienced during regular cruising on the James River and Chesapeake Bay.

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Andy Sweet installed the Humphree Lightning system on his Formula 35SS sports cruiser

Background and boat usage

Can you briefly introduce yourself and tell us how long you’ve owned the Formula 350 SS?

My name is Andy Sweet. I have been boating my whole life. I grew up with a family boat as a kid and have owned five boats of my own since the late 80s. I’ve been fortunate to have spent my career in the marine engine industry where I have had exposure to all sizes and kinds of boats with various kinds of propulsion.

 

How do you typically use the boat (day trips, overnight, fishing, cruising, etc.) and how many hours per season do you usually run it?

Most of our boating is “day trips” where we head up the James River or Chesapeake Bay to spend a few hours at the beach/sandbar or float out on the Bay. A few times a year we will plan overnight trips of a few days.

Powered by high-speed interceptors with 50 mm stroke, Lightning enables faster response, improved dynamic trim, and superior stability. The result is a smoother ride, tighter turns, and optimized fuel efficiency, significantly improving the overall boating experience. Lightning is a fully automatic, next-generation trim and stabilization system designed for boats between 20 and 45 feet. With its Cruise and Ultimate function packages, the system delivers enhanced performance, comfort, and control.

automatic, next-generation trim and stabilization system on a white background
Humphree Lightning automatic, next-generation trim and stabilisation system.

Discover the Lightning system

Explore how Lightning’s automatic trim and active ride control enhance performance, comfort and efficiency on your boat.
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Decision and installation

What made you decide to install Lightning on your Formula 350 SS?

I have always been sensitive to my boat’s trim. I find myself constantly adjusting the engine trim or the trim tabs to get the best ride for the speed and water conditions we are in. The auto trim and list control were the features that attracted me to Lightning. Automatic list control is the feature I like the most because it levels the boat out no matter what the wind does or if someone moves from one seat to another.

 

How was the installation process – did you have it professionally installed or did you fit it yourself? Any surprises or challenges?

I was building a new Formula 350 SS and I wanted Lightning on my new boat. Formula and Humphree worked together and my Lightning was installed at the Formula factory. The template made it easy for the factory to determine where to drill for the mounting screws and the wiring that goes through the transom. I like the fact there are mounting screws that securely hold the units to the transom.

 

How long have you had Lightning installed?

One season.

Underside of a boat with the Humphree Lightning trim tab system installed to the hull
Humphree Lightning installation positioning.

Performance and handling

What differences did you notice in the boat’s handling after installing Lightning?

a) The boat gets on plane faster because the blades fully extend when the bow goes up to get over the hump. The blades automatically retract once the boat is on plane. I can fine tune depending on the sea state.
b) The list control is always keeping the boat level regardless of which way the wind is blowing or where people are sitting. These two features make it worth it for me to have Lightning on my boat.

 

How does Lightning affect the boat’s behaviour at different speeds (idle, cruise, top speed)?

The system is always looking to optimise the trim based on the angle of the boat, so as the bow goes up or down depending on the speed, the system is always adjusting the tabs, so I don’t have to.

Humphree Lightning views of two different screens showing trim options
Interface and control options on the Humphree Lightning system.

“I know I’m getting the best fuel economy at whatever speed I’m running.”

Fuel Efficiency

Have you noticed any changes in fuel consumption after installing Lightning?

Just knowing that the system is optimising the boat’s trim, I know I’m getting the best fuel economy at whatever speed I’m running.

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“Just keeping the boat level improves the ride which translates into passenger comfort.”

Discover the Lightning system

Explore how Lightning’s automatic trim and active ride control enhance performance, comfort and efficiency on your boat.
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Comfort and onboard experience

How has Lightning influenced passenger comfort?

Just keeping the boat level improves the ride which translates into passenger comfort.

 

Does the system make a noticeable difference in rough sea conditions or in wake from other boats?

Yes, whether it is automatic, or I dial in the trim with the display pad, the system responds quickly to the changes in wave height.

Reliability and support

Have you had any issues or maintenance needs with Lightning since installation? If so, how was the service/support experience?

A: No problems. The system has been flawless. I’ve also performed a software update over-the-air using my cell phone and the update was quick and easy.

Screen of a Simrad Multi function unit with the Lightning integration showing on the screen
The Humphree Lightning system can be integrated with your chosen MFD.

Was it a good investment?

Do you feel Lightning was a good investment for your Formula 350 SS? Why or why not?

Yes. I really wanted the trim to be automatic and for the most part it is. There’s enough to do when you are running the boat in congested areas or in rough seas, so if I do not have to focus on adjusting the trim there is value in that. I feel strongly the system is doing what I wanted it to do.

 

Would you recommend Lightning to other Formula 350 SS owners or boaters in general? What type of boater would benefit most?

Yes, for all the points I’ve made above and for the simplicity of operation, I highly recommend Lightning. The system responds fast and it is predictable and reliable with no downside to the performance of the boat. Since Lightning works independent of the engine’s control system, it can work on any boat, regardless of whether it is inboard, outboard or stern drive. The installation is simple and pretty much self-contained since the motors are integrated into the unit. Inside the boat is the control panel at the helm (or you can use the boat’s MFD display with the addition of an ethernet cable), the control unit mounted near the transom, and a harness to connect everything together. Even a set of underwater lights are built into each unit and controlled by the display.

Final thoughts

Any final thoughts or stories about how Lightning changed your boating experience?

I think I’ve said it all above. Lightning is far superior to the old-fashioned manual trim tabs and buttons that we’re constantly tweaking as an operator. The simplicity and overall performance of the system make it worth it to me.

Key Humphree Lightning features

FeatureDetail
Actuator performanceHigh-speed actuators with 50mm extended interceptor blade stroke
Ride controlSimultaneous trim, pitch, list and roll control
Underwater LightsIntegrated lights in each interceptor unit, included in Function Packages
InstallationSimple fitting with no gluing required
Chine versionsChine version interceptors at no extra cost
Remote supportConnected to Humphree portal for diagnostics
IntegrationMFD compatibility with no additional cost
ControlsToggles and manual button options available

Try before you buy

Function Trials let boat owners experience all the functions in Humphree’s ULTIMATE package.

Discover the Lightning system

Explore how Lightning’s automatic trim and active ride control enhance performance, comfort and efficiency on your boat.
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