Shopping for boats and personal watercraft can feel like choosing between two very different versions of time on the water: the complete boat or the motor that brings a small hull to life. In this head-to-head, you're weighing a 21' 1990 Supra Mariah, a used inboard ski boat, against a compact two-stroke outboard designed for a dinghy or small fishing boat. The Supra Mariah is a full watercraft with a trailer; the outboard is a portable power package. The price difference is substantial at $7,823.38, but the real question isn't just cost-it's what you plan to do once you're on the water.
Quick Verdict
If your goal is skiing, wakeboarding, or hauling a group across a lake, the 1990 Supra Mariah is the boat to choose. It includes the hull, inboard engine, and trailer. If you already have a dinghy or small fishing boat and need reliable, low-cost power, the outboard is the practical buy.
At a Glance
| Product | Price | Condition | Use For |
|---|---|---|---|
| 21' 1990 Supra Mariah Boat | USD 8,000.00 | Used | Freshwater skiing and cruising |
| 3.5HP 2 Stroke Gas Outboard Motor | USD 176.62 | New | Dinghies and small fishing boats |
Where Each Wins
- The Supra Mariah wins for anyone who needs a complete watercraft. The composite hull, inboard gas engine, and included trailer make it a ready-to-use ski boat. It's a one-owner boat stored indoors, with all stainless hardware and new gelcoat.
- The outboard wins on portability and condition. It's new, compact, and includes the water pump impeller, starter, funnel, and fuel mixing bottle. You can add reliable power to a dinghy without buying a second hull.
Product Notes
21' 1990 Supra Mariah Boat
This is the choice if you want an entire ski boat rather than just a motor. The Supra Mariah is a used, one-owner freshwater boat with an inboard engine, composite hull, and all stainless hardware. It includes a trailer with new tires, and the gelcoat and upholstery are in good shape. The concrete reason to choose it: the package delivers a complete boat with a 785-hour inboard engine, so you can get on the water without buying anything else. The clear limitation is the 1990 powertrain. A boat this old will need regular attention, and the inboard engine's condition is exactly what you'd expect from 785 hours of use. If you're not ready for that responsibility, this isn't the easy choice.
3.5HP 2 Stroke Gas Outboard Motor
This motor is built for a small dinghy or fishing boat. It's a new 3.5HP two-stroke with manual start, CDI ignition, and a 35:1 fuel-to-oil ratio. The package includes the motor, water pump impeller, starter, funnel, and a fuel mixing bottle, so you have the essentials in one box. The concrete reason to choose it: it's a brand-new motor that can push a small boat at up to 12 km/h with four people on board, giving you an inexpensive way to cover short distances. The limitation is its power band: 3.5 HP is meant for a dinghy, not for towing skis or moving a full-size boat. You'll also mix oil into the gasoline and pull a manual starter each time, so it requires a hands-on approach on every outing.
Final Choice by Use Case
- For a complete ski boat: Choose the Supra Mariah. You get a freshwater boat, an inboard engine, and a trailer in one package.
- For an existing dinghy: Choose the outboard. It's sized for small fishing boats and dinghies, and it avoids the cost of a second hull.
- If you have no hull at all: The Supra Mariah is the complete solution, while the outboard only makes sense if you already have a boat to power.
