Most builders separate two versions of the same boat with a long list of small differences - a different helm layout here, a different upholstery package there - and leave the buyer to work out which pile of details he prefers. Scout has done something cleaner and more useful with the 670. There is one 66'9" hull. There is one question. Upper station, or no upper station.
Answer yes and the boat is the 670 LXF. Answer no and it is the 670 LXS. Scout's own model-selection option list says exactly that, in eight words: "Sport Version - No Upper Station" and "Fishing Version - Includes Flybridge." Everything else on the two spec panels is identical - 66'9" length, 16'2" beam, 1,500 usable gallons, 3,000 horsepower maximum, three staterooms, the same carbon-epoxy structure. Two model pages, one boat, one fork in the road.
This piece is about the fork.
What the flybridge actually buys you
On a 67-foot outboard boat the upper station is not a view deck. It is a fishing tool, and Scout's option sheet is the proof. The twin electric 24V teaser reel setup is listed with a single qualifier: only available with the flybridge. You cannot order it on the Sport. That is a small line in a long document and it tells you precisely who the LXF is drawn for - the crew that runs teasers, watches the spread from height, and wants a second set of controls above the cockpit rather than a tower bolted onto a boat that was not designed for one.
The rest of the fishing package supports the same reading. Standard - not optional - the cockpit carries two 60-gallon in-floor fish boxes, port and starboard 30-gallon baitwells with see-through front windows on Hooker Electric pumps, six flush-mount stainless rod holders in the gunnels and nine more across the transom, twelve recessed stainless cleats bow to stern, and gaff and brush storage built into three of the hardtop support legs. Behind that sits a beam-to-beam flush engine platform with walk-through transom access, and a hydraulic full-cockpit fold-down beach platform that opens the working beam to 19'6".
Then the two decisions that must be made at the order desk, because they cannot be made later. The standard transom is a 20/60/20 layout - baitwells port and starboard with integrated couch seating between them. The alternative is the Sportfish transom, a 30/40/30 with large pressurized baitwells, an integrated tuna tube system for five in the center, and full-width bolsters with walk-through gates. That second transom is the one Scout lists as required if you want a fighting chair. Outriggers start as 22-foot Rupp XHD carbon-weave triple riggers with an upgrade to 26-foot Marsh Tacky poles.
The engine count is not the difference
It is worth killing a piece of folklore before it takes hold: the shorthand going around is that the fishing boat gets four engines and the sport boat gets five. Scout's own pages say otherwise - both carry the same sentence: the boat "is powered with four (4) or five (5) Mercury V-12 600 HP engines, producing up to 3,000 HP." Both spec strips read 3,000 max horsepower. Quint 600s are a factory option on the LXF exactly as they are on the LXS.
What the documents do establish is the baseline. The shared standard-equipment sheet lists "Mercury V12 600hp Outboard Engines (4)," and the quint sits under optional equipment. So four is where the boat starts and the fifth engine is a decision you make - one that costs a fifth set of props, a fifth service interval and a busier transom to fish around, and one that carries the same published top speed, cruise and range as the quad.
Which is the point. If the engine count does not distinguish the two models, and the hull, beam, fuel, horsepower ceiling and stateroom count are all identical, then the flybridge is not merely the headline difference. It is the only one.
Read the numbers as estimates
Scout publishes three performance figures for the 670 LXF: a top speed of approximately 60 mph, a fast cruise of 40 mph, and a range of approximately 500 miles. The same three numbers appear whether you order four engines or five, and all three are the manufacturer's own approximations - planning figures, with the verifying done at a sea trial with the engine count you intend to own.
The other number to pin down is the one that costs money to guess wrong. If you are sizing a lift, booking a slip or planning a haulout on a 66'9" hull rated to 3,000 horsepower, get the rigged weight for your exact engine count from your dealer in writing.
And here is one piece of arithmetic worth doing. Approximately 500 miles of range on 1,500 usable gallons works out to roughly a third of a mile per gallon - and that is running the tank to empty, which nobody does. Plan real offshore legs off two-thirds of the tank and you will be closer to the truth.
The boat around the fishing
None of the above should suggest a stripped-out tournament boat. The 670 LXF has three staterooms, and Scout specifies all standing areas below at a minimum of 6'7", with the upper interior atrium at 7'. The master takes a queen on a hydraulically actuated base with storage beneath it, a lighted hanging closet, a flush 32" smart TV, a Garmin TD50 control screen, zoned HVAC, an emergency escape hatch and en-suite access to a day head and a separate shower. The aft VIP is a double behind a lockable door with its own en-suite head and shower. The third cabin is a proper crew stateroom with twin berths and a lockable door of its own.
The enclosed atrium is where the boat stops behaving like a center console entirely: a two-burner induction cooktop under an exhaust vent, a convection oven and microwave combination, two Jennair drawer refrigerators and a drawer freezer, a 15" hot and cold sink, an electric hi-lo dining table and a 6'8" aft window that drops on a switch. Below it, the salon has a 7'2" couch, a second 32" TV and a Garmin 943 MFD with full vessel controls.
Holding it together is a systems list that reads like a much larger yacht: a Kohler 24 kW diesel generator on its own 184-gallon diesel tank, two Dometic 48,000 BTU variable-speed air chillers, a Seakeeper 14 as standard with an 18 optional, AGM 12V and 24V battery banks, Fireboy suppression in the systems room and real teak underfoot. Fresh water is 118 gallons against a 59-gallon black tank - the one place the accommodation outruns the plumbing, and the number to plan pump-outs around.
Where it sits
Until now the top of Scout's LXF line was the 530 LXF at 53'5" with 875 gallons and two cabins. The 670 LXF adds more than thirteen feet, nearly doubles the fuel and adds a third stateroom, with nothing in between the two. That is not an incremental step up a range. It is a new ceiling.
What I would do before signing
Two things, and neither is optional. Get the rigged dry weight for your engine count in writing. And go stand on the flybridge, because it is the entire difference between this boat and the other one, and it is the single decision you cannot reverse after the build slot closes.
Scout is currently taking reservations for the 670 LXF rather than selling from inventory, so there is time to get both answers before anyone needs a signature.