Premier Boats Alante 251 2008 boat specs
Premier Boats
Premier Boats Alante 251 2008
2008
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Premier Boats Grand Isle 260 RF / SL 2012 boat specs
Premier Boats
Premier Boats Grand Isle 260 RF / SL 2012
2012
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Premier Boats Alante 251 2008 vs Premier Boats Grand Isle 260 RF / SL 2012 — A Close Look at Two Pontoons

When two boats share the same hull type — in this case both the Premier Boats Alante 251 2008 and the Premier Boats Grand Isle 260 RF / SL 2012 are pontoon designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — Premier Boats Alante 251 2008 at 24,0 ft versus Premier Boats Grand Isle 260 RF / SL 2012 at 26,4 ft. At 245 lbs and 335 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 250 hp, the Premier Boats Grand Isle 260 RF / SL 2012 has a 100-hp advantage over the Premier Boats Alante 251 2008's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The Premier Boats Grand Isle 260 RF / SL 2012 is rated for 16 passengers, while the Premier Boats Alante 251 2008 caps at 14. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Premier Boats Grand Isle 260 RF / SL 2012 could be the deciding factor.

Bottom line: Choose the Premier Boats Grand Isle 260 RF / SL 2012 if your priority is putting more people on the water — it handles 16 passengers and at 26,4 ft it has the deck room to back that rating up comfortably. The Premier Boats Alante 251 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 14 that costs less to run day-to-day.
General Boat Info
MakePremier Boats
MakePremier Boats
ModelAlante 251
ModelGrand Isle 260 RF / SL
Model Year2008
Model Year2012
Measurements / Dimensions
Beam8 ft. 6 in
Beam8 ft. 6 in
Beam - Meters2.59
Beam - Meters2.59
Beam - Inches102
Beam - Inches102
Weight - Detail2,100 lbs. (2 tubes) 2,450 lbs. (3 tubes)
Weight - Detail2,750 lbs. (3 tubes / 30 in. PTX) 3,350 lbs. (36 in. PTX)
Weight - kg1111.3
Weight - kg1519.53
Weight - lbs.245
Weight - lbs.335
Length [deck]24 ft. 0 in
Length [deck]26 ft
Length - Feet24
Length - Feet26.42
Length - Inches4
Length - Inchesnot available
Length overall - Detail24 ft. 4 in
Length overall - Detail26 ft. 5 in
Length overall - Meters7.42
Length overall - Meters8.05
Length overall - Inches292
Length overall - Inches317
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.090 gauge (with 0.100 nosecones)
Hull thicknessnot available
Hull typePontoon
Hull typePontoon
Pontoon and Inflatable Specific
Tube diameter25 in
Tube diameter25 in
Number of tubesnot available
Number of tubes3
Engine and Drivetrain
Fuel typeGas
Fuel typeGas
Drive typeOutboard
Drive typeOutboard
Engine max150 hp (2 tubes) 250 hp (3 tubes) 300 hp (PTX)
Engine max250 hp (3 tubes / 30 in. PTX) 300 hp (36 in. PTX) 350 hp (Twin 36 in. PTX)
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail47 gal
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters177.91
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal47
Operational Info
Maximum capacity2,700 lbs. (2 tubes) 3,150 lbs. (3 tubes) 4,100 lbs. (PTX)
Maximum capacity3,350 lbs. (3 tubes / 30 in. PTX) 4,000 lbs. (36 in. PTX) 3,900 lbs. (PTX twin)
Maximum people14 (2 tubes) 15 (3 tubes) 17 (PTX)
Maximum people16

Premier Boats Alante 251 2008 vs Premier Boats Grand Isle 260 RF / SL 2012 — Common Questions

Which is the larger boat — the Premier Boats Alante 251 2008 or the Premier Boats Grand Isle 260 RF / SL 2012?
The Premier Boats Grand Isle 260 RF / SL 2012 is the longer of the two at 26,4 feet overall. The Premier Boats Alante 251 2008 comes in at 24,0 feet, making it roughly 2,4 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Premier Boats Alante 251 2008 or the Premier Boats Grand Isle 260 RF / SL 2012?
For trailering, the Premier Boats Alante 251 2008 has the edge at 245 lbs dry weight versus 335 lbs for the Premier Boats Grand Isle 260 RF / SL 2012. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
Which boat can handle a bigger outboard?
The Premier Boats Grand Isle 260 RF / SL 2012 is rated to a maximum of 250 hp, giving it the larger power ceiling. The Premier Boats Alante 251 2008 tops out at 150 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Premier Boats Alante 251 2008 is Coast Guard rated for 14 passengers, while the Premier Boats Grand Isle 260 RF / SL 2012 is certified for 16. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Premier Boats Alante 251 2008 and Premier Boats Grand Isle 260 RF / SL 2012 share an 8 ft. 6 in beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
Are the Premier Boats Alante 251 2008 and Premier Boats Grand Isle 260 RF / SL 2012 from the same manufacturer?
Yes — both the Premier Boats Alante 251 2008 and the Premier Boats Grand Isle 260 RF / SL 2012 are built by Premier Boats. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.