Dos Mas Sport Fishing is inviting offshore fanatics to join them on an adventure that will take you on a trip exploring the richest fishing grounds off the coast of Golfito, Costa Rica. Captain Donald Mc Guinness has over 40 years of experience fishing all over the world and catching many of the world’s most prized fish species.

His most impressive catch is certainly the massive, 1236-pound Black Marlin caught in 2006. On your trip, you’ll be able to leverage your captain’s vast experience to get the best possible shot at a catch of a lifetime!

The boat that’ll take you to the deep waters is a 30’ Island Hopper express cruiser, powered by 450 HP Cummins engine. Restored as recently as 2019, the vessel features the latest communication, navigation, radar, and fish-finding electronics as well as all the necessary safety equipment. Giving its guests everything they could need for a safe and productive trip.

Creature comforts have also been taken care of as the boat is fully outfitted for multi-day trips. On board, you’ll find 2 bunk beds, a private toilet, shower, and kitchen, as well as a multimedia system for entertainment. The vessel’s max capacity is 8 guests on single-day and 4 guests on multi-day trips.

The captain will provide you with everything you need to fish. You’ll be equipped with first-class Shimano, Tiagra, and Trinus gear and will have access to both conventional and spinning options. There will also be a variety of artificial lures and live bait, depending on the fish you’re targeting. Live bait will be caught ahead of the trip and is always included in the price.

On all trips, you’ll be provided with sandwiches, snacks, fruit, and drinks. On multi-day trips, you’ll also have hot meals prepared. All you need to bring is some sunscreen, sunglasses, a hat.

Now if you’re ready for your next offshore fishing adventure, find an opening in the captain’s calendar and start planning your trip today!

Select date to see available trips and rates:

  • Private trip
    Multi Day Trip 4 PAX
    FREE Cancellation 30 days notice
    2 Day Trip, starts at 8:00 AM
    Overnight stay, liveaboard
    price breakdown
    For this trip, you'll meet the captain in the evening around 8 or 9, have dinner, travel all night, start fishing around 5:30 AM and fish until 6 PM. Then, you'll spend the night at the fishing grounds which are about 60 miles away from the shore. You'll fish all day again and then come back. All in all, it'll be 2 days of fishing, 1 night of travelling and 1 night sleeping. You'll be able to target many of the most prized species swimming in these waters such as Marlin and Sailfish. 
  • Private trip
    12 Hour Trip
    FREE Cancellation 30 days notice
    12 Hour Trip, starts at 5:30 AM
    price breakdown
    This offshore adventure leaves at dawn and it'll take you about an hour to get to the desired fishing spot. Once there, you'll fish all day and head back to the port around 5:30 PM. You'll get the chance to try out a variety of techniques and target many popular species such as Sailfish, Mahi Mahi, Roosterfish, and Marlin.
  • Private trip
    Half Day trip
    FREE Cancellation 30 days notice
    4 Hour Trip, starts at 7:00 AM
    price breakdown
    Inshore fishing only for half day.You'll get the chance to try out a variety of techniques and target many popular species.
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About the Captain

Donald Mc Guinness
Golfito, Puntarenas Province, Costa Rica
1 Customer Reviews
Response time within an hour
Member since September 2019
Donald is a second-generation captain with 42 years of fishing experience. His father started fishing in Costa Rica in the fifties. He loves fishing and has been fishing since he was 13. He fished in California for 7 years, 5 years in North Carolina, 6 years in Panama and the rest of his life on the Pacific coast in Costa Rica. His biggest catch was a 1236 pound Black Marlin. He also holds a record for 35 Marlins caught and released in one day.

About this listing

Targeted Species

Amberjack Amberjack
Barracuda (Great) Barracuda (Great)
Dolphin (Mahi Mahi) Dolphin (Mahi Mahi)
Grouper (Goliath) Grouper (Goliath)

Jack Crevalle Jack Crevalle
King Mackerel (Kingfish) King Mackerel (Kingfish)
Marlin (Black) Marlin (Black)
Marlin (Blue) Marlin (Blue)

Permit Permit
Roosterfish Roosterfish
Sailfish Sailfish
Snapper (Red) Snapper (Red)

Boat Specs

Island Hopper (Express cruiser) originally built in 1998, and restored in 2019. Powered by a 450HP Cummins engine, with a maximum cruising speed of 26 knots.

30 ft
8 persons

Types of Fishing

Inshore Fishing
Nearshore Fishing
Offshore Fishing
Reef Fishing
Wreck Fishing
Flats Fishing

Fishing Techniques

Light Tackle
Heavy Tackle
Bottom Fishing
Fly Fishing
Drift Fishing
Deep Sea Fishing


Fighting Chair
Life Jackets
Snorkeling Equipment
Live Bait Well
Multimedia System
Tuna Tubes
Spearfishing Equipment
Ice Box
Fighting Chair
Life Jackets

Trip Includes

Rods, reels & tackle
Live Bait
Catch cleaning & filleting
First Mate
Fishing License
Fly Fishing Equipment

Cancellation Policy

Free cancellation up to 30 days prior to trip

Customers can cancel or modify their booking up to 30 days before the trip date free of charge. If the trip is canceled or modified later, or in the event of a no-show, 100% of the deposit will be charged.

Listing Policies

Pickup included in price
Transfer from hotels or jetties in Golfito to departure site is available and included in trip rates.
Child Friendly
You Keep Catch
Catch and Release Allowed
Catch and Release Mandatory
Disabled Accessible


Book with 20% deposit
When the captain confirms your trip, FishingBooker charges your credit card a 20% deposit to guarantee your reservation.
Pay remaining balance to captain
The remaining balance is to be paid directly to the charter operator on or prior to your trip date in one of the following payment methods:
Bank Transfer

Golfito Fishing Calendar

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Customer Reviews

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Adam E.
United States
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Fully Day Offshore With Dos Mas

VERIFIED   12 Hour Trip on November 9, 2019
The 8 people of our party had a full day offshore fishing trip with Captain Don and Carlos, his mate.  We had a terrific time...
Adam E. recommends Dos Mas Sport Fishing
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