Quick answer Most Ontario cottage boat repowers fall in the 25 to 115 HP range. A modern Mercury FourStroke brings quiet running, better fuel economy, and a multi-year limited warranty. We do cottage repowers every season from the Kawarthas to the Trent. For a real number on...
Quick answer
Most Ontario cottage boat repowers fall in the 25 to 115 HP range. A modern Mercury FourStroke brings quiet running, better fuel economy, and a multi-year limited warranty. We do cottage repowers every season from the Kawarthas to the Trent. For a real number on your boat, build a quote at mercuryrepower.ca.
The honest case for repowering a cottage boat
Cottage boats live a different life than commuter boats. Short seasons, long winters in storage, sometimes inconsistent maintenance, and a habit of being passed down through families rather than sold on the open market. Most cottage hulls outlast their motors by decades.
The customers we see at HBW in spring usually fit one of three patterns: the boat ran fine last fall and will not start now; the motor has been getting harder to start every season; or the motor finally died and they need a solution before the kids arrive in July.
All three are repower candidates, if the hull is good.
The part that trips people up is the math. A repower on a typical cottage aluminum boat or pontoon lands at a fraction of what a comparable new boat costs. The hull is the asset. The motor is the wear part. For what every Mercury model costs in CAD, see our full price reference.
What actually changes the decision for cottage boats
Hull age and condition. Most aluminum cottage hulls 15 to 30 years old are still structurally sound, aluminum is unusually forgiving. Fiberglass in the same age range needs a careful look but is often fine.
Storage history. Indoor or covered storage extends hull life. Outdoor uncovered storage, which is the default at most cottages, shortens it, but most aluminum hulls handle it without serious structural consequences.
How hard the boat works. A cottage boat running 30 to 80 hours a season is gentler on components than a commuter boat logging 200+ hours.
Whether the boat will stay in the family. Boats headed to the kids or grandkids are worth the repower investment. Boats you plan to sell next year usually are not.
Maintenance history. A boat with consistent winterization records is a different repower candidate than one that has been "running fine" without professional service for ten years.
“The boat hasn't left our cottage in 22 years. The Mercury 60 finally gave up last summer. Jay quoted a Mercury 75 swap that included winterizing and a spring launch. We're back on the lake without driving the boat anywhere.
–Tracy L.–Kawartha cottage
The common cottage boat scenarios we see at HBW
The old aluminum fishing boat
A 16 to 18 ft aluminum console from the 1980s or 1990s, originally rigged with an Evinrude or an older Mercury. The hull is solid, aluminum is forgiving and this type of boat is built to last. The motor is dead or nearly there. The customer wants to keep the boat in the family.
This is a clean repower candidate. A Mercury FourStroke in the appropriate HP class for the hull, possibly paired with a 9.9 ProKicker if fishing is part of the plan, gives this hull another generation of use.
The cottage runabout
A 17 to 19 ft fiberglass runabout from the 1990s or early 2000s, used for family tubing, swimming, and runs to town. The motor is old and often underpowered relative to how the family uses the boat today, because families grow.
Stepping up in HP during a repower is common here and usually the right call.
The cottage pontoon
An 18 to 22 ft pontoon used for cruising, fishing with the kids, and the occasional tube ride. The motor is usually original from when the pontoon was bought.
Mercury Command Thrust matters on pontoons. Pontoon hulls are heavy and blunt-fronted; they need pulling power more than top speed.
The tin boat
A 14 to 16 ft tiller boat used for solo fishing and quick runs. The motor has been getting harder to start and parts for it have been getting harder to find. These are simple repowers, smaller motor, less rigging, lower cost.
You can build a live CAD quote for your repower online at Mercury Repower Centre.
When should you repower a cottage boat?
If the motor is dead: Solve it before next season. A non-running motor at the cottage is a problem that only gets worse waiting.
If the motor is unreliable: Hard starts, fuel system warnings, frequent stalling. These are signs of a motor approaching the end of its reliable service life. Plan the repower this off-season.
If the motor is old but "running fine": A 20-plus-year-old motor running reasonably well still has limited remaining life. Plan the budget over the next two to three seasons and get ahead of it.
If the motor is recent and reliable: Run it. Modern Mercury FourStrokes have decades of service life with proper maintenance. There is no case for replacing a motor that does not need replacing.
The customers who plan cottage repowers in the off-season get easier scheduling and less stress. The customers who wait until the motor dies in July are competing for shop slots during the busiest part of the season.
What we check before recommending a cottage repower
When a cottage owner comes in, we want to know:
- Boat make, model, year, and length
- Current motor age, brand, HP, and condition
- Hull condition (we do a walk-around: transom tap test, floor check, bilge inspection)
- How the boat is used (fishing, family cruising, tubing, mixed)
- How many hours the boat runs per season, roughly
- Whether kids or grandkids are going to inherit the boat
- Budget range and whether financing is relevant
Common cottage repower mistakes we see every season
"One more season" thinking. The motor almost makes it through the season, dies mid-July, and the customer is calling around for shop time when everyone is slammed. Plan ahead.
Skipping the hull walk-around. Some cottage hulls have hidden problems. The walk-around takes half an hour and prevents expensive regret.
Underbuying HP for how the family actually uses the boat. Families grow. Right-size during the repower.
Skipping the ProKicker if you fish. If fishing is part of the cottage routine, a 9.9 ProKicker is the standard addition.
Half-redoing the rigging. Old throttle cables, shift cables, and control boxes are often at end of life on cottage boats. The cheapest time to update them is during the repower, when the dash is already open.
What about the trailer?
Cottage boat trailers often outlive the motor and survive multiple repowers. But they have wear items that often get ignored.
- Wheel bearings. Need annual service.
- Tires. UV damage and dry rot are common. Tires older than six years should be replaced regardless of tread depth.
- Lights and wiring. Corrosion is standard on trailers that sit outdoors through Ontario winters.
- Surge brakes. If the trailer has them, they need annual attention.
We look at trailers as part of cottage repower projects.
Ready to talk through your cottage boat?
Build a quote at mercuryrepower.ca for a starting point on motor and rigging costs. If you want to talk through your specific hull before you build, call us at 905-342-2153.
We do cottage repowers every season. We will give you the honest answer for your boat.
Last reviewed: 2026-05-11.
Ready to price it out? Build a live CAD quote for your repower online at the Mercury Repower Centre.
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