Ugly Johns Custom Boats

Gallery

Every angle

2026 Harris Grand Mariner 230 SLDH pontoon boat on a serene lake.
2026 Harris Grand Mariner 230 SLDH pontoon boat on a serene lake.
2026 Harris Grand Mariner 230 SLDH pontoon boat on a serene lake.
2026 Harris Grand Mariner 230 SLDH cruising on a serene lake with lush forest backdrop.
2026 Harris Grand Mariner 230 SLDH pontoon boat on a serene lake.

What's aboard

  • Tow tower

Overview

With a totally redesigned look, the Grand Mariner stuns everyone on the lake with it's sweeping lines and sloped silhouette. Our soft-touch vinyl and luxurious furniture keep your family comfortable, while the Mercury engine puts plenty of power for watersports at your fingertips.

With the sleek look and high tech of an all-electric tower and C-Zone helm, you have ultimate control of your Grand Mariner—whether you're managing your electric system or illuminating the night with a signature light show.

Full specifications

Year
2027
Make
Harris
Model
Grand Mariner 230 SLDH
Category
Power
Class
Pontoon Boats, Runabouts
Condition
Used

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Financing

Own it this season, not someday

We work with marine lenders to get you a competitive rate, take your trade, and walk you through the numbers before you ever sign. Terms up to 20 years on qualifying boats.

  • Competitive marine rates
  • Trade-ins welcome
  • Quick pre-approval
A deck of common boat-financing myths, busted Before you finance Boat loans aren't car loans — 5 myths, busted See the myths & the facts →
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What's included with every boat

More than a hull

On-water captain's training

Before you ever head out alone, one of our captains rides with you — docking, trailering, trim, and the quirks of your specific lake — until you're genuinely comfortable at the helm, not just handed the keys.

  • One-on-one, on your boat
  • Docking, trailering, trim & throttle
  • On your lake, at your pace
  • Included free with every boat

Delivered ready to run

Your boat arrives fueled, detailed, and rigged for how you'll actually use it. Electronics paired, safety gear aboard, registration sorted. Back the trailer down and go — no scramble the morning of your first trip.

  • Fueled, detailed & water-ready
  • Electronics paired, safety gear aboard
  • Registration & rigging handled
  • Nothing to set up on day one

Service that comes to you

Three mobile service boats run the lake on weekends. A dead battery or a fouled prop doesn't end your Saturday — we meet you at your slip or out on the water and get you running again.

  • 3 mobile service boats on the lake
  • We come to your slip or the water
  • Weekend coverage in season
  • A dead battery won't end your day

A slip with your name on it

432 covered slips across our docks mean your boat lives at the marina, ready when you are. No back-lot storage, no two-hour launch line on a holiday weekend — it's already in the water.

  • 432 covered slips across our docks
  • Your boat stays in the water
  • No trailering, no launch-ramp lines
  • Ready the moment you are

In-house certified techs

The people who service your boat work here and know it. Factory-certified and on staff, never subcontracted out to whoever's cheapest that week. The same hands, season after season.

  • Factory-certified, on our staff
  • Never subcontracted out
  • The same hands, season after season
  • They already know your boat

Trade-ins & financing

We value your trade and walk you through financing before you sign anything, so the number you see is the number you pay. No surprises in the back office, no pressure at the table.

  • We appraise your current boat
  • Financing walked through up front
  • The number you see is what you pay
  • No back-office surprises
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