The “big engine”
Most fishing boats have a smaller kicker engine on their boat along their main ‘big’ engine. Though the kicker gets used most often for trolling, it is possible to troll with the main engine when extreme weather conditions kick up.
If you’re trolling from a console (as opposed to using a tiller-steer engine), you can use your wheel to get in and out of cover very quickly. It can also be safer than a kicker. Having a heavy wind blowing on a structural element or into a rocky shoreline can sometimes be key to a great catch. With the big motor, you can turn away really quickly.
The biggest drawback to trolling with a high-horsepower engine is the inability to troll at extremely low speeds. With his 300hp Verado outboard for example, you can troll as slow as about 2.5 mph in calm conditions and a little slower if your moving into wind or current.
Despite that issue, you shouldn’t hesitate to troll with the main engine. If you’re outfitting a boat and plan to not have a kicker, you should consider a primary engine model with inherent or add-on features that can improve trolling performance.
For instance, a Verado engine includes industry-leading technologies that isolate engine noise and vibration, which helps minimize the likelihood of spooking fish. And its Digital Throttle & Shift controls allow smooth, effortless shifting when making repeated throttle adjustments. Similarly, the Mercury SmartCraft® suite of digital technologies is compatible with most Mercury outboards down to 40hp and includes helpful tools such as Troll Control, which can lock in engine rpm and allow for minute 10 rpm adjustments.