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1989 Blackfin 29 Custom Combi

Tampa, Florida


1989 29 Blackfin Custom Combi, “Split Decision”, is highly customized with many upgrades. This iconic classic sportfish has been completely re-imagined by her owner, one of the most experienced and skilled “Artisans” of yacht optimization in the industry, Mike Gable of Gable Enterprises. The upgraded Split Decision has been completely “Gable-ized” with a focus on maximized storage, efficiency, low maintenance, ease of cleaning and open layout throughout. As one of the foremost experts in custom fiberglass fabrication and repair, with a history of world-class racing sailboat optimizations, her owner successfully reduced the Blackfin 29’s weight from over 12,200lbs down to 9,920lbs dry. The streamlined shafts and under body, carbon fiber struts, fiberglass oversized trim tabs, and class 1 DQX 4 blade nibral props help the upgraded boat cruise 21kts at 3000 rpms with a WOT near 29kts and a range of over 350nm.



COMPLETE MARINE is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Galati Yacht Sales Tampa Bay.

Basic Boat Info

Boat Name: Split Decision
Make: Blackfin
Model: 29 Custom Combi
Year: 1989
Condition: Used
Category: Power
Construction: Fiberglass
Boat Hull ID: KMA29173A989
Has Hull ID: Yes


Length: 29 ft / 8.84 m
Length Overall: 29 ft / 8.84 m
Beam: 10'6 ft / 3.20 m
Displacement: 10,000 lb
Cabins Count: 1

Engines / Speed

Engines: 2
Engine #1 Specs:
  • Make: Volvo Penta
  • Model: AD41P-A
  • Fuel: Diesel
  • Engine Power: 200hp
  • Type: Inboard
  • Year: 1997
  • Engine Hours: 700
  • Engine Location: Port
Engine #2 Specs:
  • Make: Volvo Penta
  • Model: AD41P-A
  • Fuel: Diesel
  • Engine Power: 200hp
  • Type: Inboard
  • Year: 1997
  • Engine Hours: 1200
  • Engine Location: Starboard
Total Engine Power: 400hp


Fuel Tanks: 1
Fuel Tank Capacity: 200 gal
Water Tanks: 1
Water Tank Capacity: 22 gal
Holding Tank Count: 1
Holding Tank Capacity: 19 gal


Heads Count: 1
Stock Number: BR5666-FM
Boat Class: Runabouts, Cruisers

Vessel Walk Through

The subject vessel was stripped to the bare bones, re-manufactured and upgraded to contemporary standards. The targeted elimination of weight was achieved through numerous major modifications including re-engineering the interior layout, replacing all interior plywood with weight saving Poplite, re-manufacturing the entire cockpit sole with a removable component weighing in at only 73 lbs. and re-manufacturing the swim platform with a new component weighing 47 lbs. Further modifications were done to reduce drag through the water including stepped down shafts, redesigned and custom fabricated shaft struts, covers on the prop shaft exit slots, custom machined through hull fittings and a bottom finish that is smoother than most other hull topsides. These enhancements resulted in the intended positive effect on both fuel economy and increased range allowing Split Decision to cruise through the length of the Bahamian chain without having to carry an extra drum of fuel on deck. Additional upgrades to this respected design were made to bring the interior layout, the systems and the components to today’s standards.

The Blackfin 29, a popular model built in fiberglass from production molds was introduced in 1983 and remained in production through 1998. It was also built in a limited production run by Salt Shaker Marine from 2001 through 2003. The Blackfin 29 was described as “hands down the most expensive sportfisher around” in an article in Sea Magazine back in 1997. Carl Herndon who had worked at Bertram Yachts saw both Bertram and Hatteras, the two leaders in saltwater sport fishing boats abandoning the smaller end of the market to build larger boats. He came in to fill the void by founding Blackfin and producing high quality sport fishing boats in twenty foot plus and thirty foot plus size ranges. The Blackfin 29 was successful in taking over from the iconic Bertram 31 as is evidenced by the success and longevity of this model. Even David Pascoe, noted marine surveyor, author and boat reviewing curmudgeon gave the Blackfin 29 his highest marks.

Split Decision is an example of this Blackfin 29 that is owned by, has been re-manufactured by and has been upgraded by Mike Gable, owner and operator of Gable Enterprises, one of the premier custom fiberglass fabricating, repair and manufacturing operations in the Tampa Bay area. Mr. Gable and Gable Enterprises have been involved in boat design, construction and repair since 1980 with an overabundance of notable projects on their list of accomplishments and an enviable list of clients. A check of the Gable Enterprises website shows projects that range from resin infused skateboards to world class racing sailboats. Mr. Gable has a high degree of expertise in state-of-the-art composites including carbon fiber, Kevlar, S-glass, E-glass, vacuum bagging, resin infusion and has employed these methods, materials, techniques and skills in both construction and repair. This is mentioned in this report to help explain why a 1989 Blackfin could and would have such a high level of custom and costly modifications. As his personal boat it has been done to an extreme for his own benefit and as an example of his capabilities to maintain and bolster his reputation in the marine community. He has also used his connections in the marine industry to obtain custom parts and equipment used during the modification and outfitting process. Mr. Gable reports over $162,000.00 in expenditures for material and subcontract labor were spent on this project as of May 2019 and with his own labor factored in at a modest $40.00 per hour the total project cost would go to $310,000.00.

  • Cabin features a V-berth central forward with storage below and on hull sides.
  • Galley to port has lockers
  • Galanz microwave oven
  • Mr. Induction single burner stove and a Haier refrigerator with freezer
  • Companionway aft to cockpit w custom FRP pocket doors and folding cored removable FRP hatch.
Master Head
  • Enclosed head compartment aft
  • Starboard has a countertop washbasin
  • Pullout shower head and an electric macerating marine toilet discharging to a plastic holding tank located in the engine room (Tank is evacuated overboard with a separate pump or shore side by means of a dockside waste deck pump out fitting)
  • Shower drain sump with Rule 800 g.p.h. pump with float switch.
  • COMPASS - 3" illuminated Ritchie (X2)
  • VHFs - Raytheon Ray 45 & Icom IC-M45
  • CHART PLOTTERS - Lowrance HDS7 gen 2 chartplotter with side-scan networked WITH DEPTH
  • Lowrance HDS8 gen 2 chartplotter with side-scan networked
  • Lowrance 3G Radar and Dome
  • Lowrance Satellite XM Weather and Antenna
  • AUTOPILOT - Simrad AP11
  • ENTERTAINMENT- Dual 12 volt am/fm/cd XM stereo with remote control, Two pairs of speakers (interior / exterior)
  • AIR CONDITIONING - Custom Pompanette 6,000 BTU 12-volt, marine system installed. A/C thermostat/temp gauge in galley
Electrical System
  • TYPE 12-volt d/c and 110-volt a/c systems.
  • 12 VOLT Four group 31 maintenance free 12-volt batteries with two wired in parallel for the house service and two for engine starting All batteries mounted in a custom FRP box integrated as seat for engine maintenance with locking hasp lid.
  • 110 VOLT 30-amp shore service with marine type shore cord. Xantrex Freedom 1800 inverter/40-amp charger
  • PANELS Circuit breaker panel with analog a/c and d/c volt meters and ammeters. Maxwell windlass circuit breaker panel,
  • BATTERY CHARGER - Xantrex Freedom 1800 inverter/40-amp charger Blue Sea SI-ACR, automatic charging relay
  • BONDING - Connections made from all aluminum tanks, thru hulls to sacrificial zincs mounted on stern
Mechanical Equipment

Aft Deck:

Added custom 35 gallon Live well with live well glass, led lighting, and bait cutting station from the hinged lids.


Original cockpit design required midship drains and was a bad design. Entire cockpit sole was removed and redesigned to drain aft through large scuppers. This also allowed for the removal of a lot of unnecessary panels and wood trim resulting in a significant weight savings, easier cleaning, and a much neater aesthetic that is more modern.

Remove aft IGU splash in cockpit (75 plus lb weight savings plus tons more room now), sand and fair out exposed laminate inside prime and paint to finish with Awlgrip Snow White. Installed and changed floor height and slope of floor to improve drainage.

New upgraded cored 2 piece removable floor. Old floor weight 195 lbs, new floor weight weight with larger sealed hatches 85 lbs.


The original Blackfin reverse diamond nonskid and wood trim was hard to maintain. They removed ALL of the wood, diamond nonskid and went to a user friendly Chevy White Awlgrip satin smooth deck non-skid. This ads to the overall modernization of this classic Sportfish.


Original hull was very stiff. The refit team focused on reducing the weight and lowering the center of gravity to improve the pitch, roll, and sway characteristics.

By updating materials and moving needed gear down closer/lower to waterline improved these features. They trimmed weight from tower, removed cockpit aluminum headliner, lowered deck lights, etc.


The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

Mechanical Disclaimer

Engine and generator hours are as of the date of the original listing and are a representation of what the listing broker is told by the owner and/or actual reading of the engine hour meters. The broker cannot guarantee the true hours. It is the responsibility of the purchaser and/or his agent to verify engine hours, warranties implied or otherwise and major overhauls as well as all other representations noted on the listing.


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