Detailed Evaluation & Buyer Recommendation
Crestliner Backwater 1870 Tiller 2010 vs Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 — Same Brand, Different Boat
Matching a modified vee Crestliner Backwater 1870 Tiller 2010 against a pontoon Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
Size is the most obvious dividing line here. The Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 measures 23,0 feet overall (2009), giving it roughly 5,0 additional feet of deck space compared to the Crestliner Backwater 1870 Tiller 2010 at 18,0 feet (2010). Weight tells a clearer story for trailering families: the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 tips the scales at 3 613 lbs — 2 498 lbs less than the Crestliner Backwater 1870 Tiller 2010 at 1 115 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 75 hp, the Crestliner Backwater 1870 Tiller 2010 has a 72-hp advantage over the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009's 3-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 Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 is rated for 12 passengers, while the Crestliner Backwater 1870 Tiller 2010 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 could be the deciding factor.
Bottom line: Choose the Crestliner Grand Cayman 2485 I/O RFL TriToon 2009 if your priority is putting more people on the water — it handles 12 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Crestliner Backwater 1870 Tiller 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.
General Boat Info
MakeCrestliner
MakeCrestliner
ModelBackwater 1870 Tiller
ModelGrand Cayman 2485 I/O RFL TriToon
Model Year201
Model Year2009
Measurements / Dimensions
Beam90.5 in. (230 cm)
Beam102 in. (259 cm)
Beam - Meters2.31
Beam - Meters2.59
Beam - Inches90.5
Beam - Inches102
Deadrise10℃
Deadrisenot available
Weight - Detail1,115 lbs. (506 kg)
Weight - Detail3,613 lbs. (1,638 kg) with 4.3 l
Weight - kg505.76
Weight - kg1638.83
Weight - lbs.1115
Weight - lbs.3613
Width [transom] - Detail70 in. (178 cm)
Width [transom] - Detailnot available
Height - Detail23 in. (58 cm)
Height - Detailnot available
Height - Meters0.58
Height - Metersnot available
Height - Inches23
Height - Inchesnot available
Height [transom]20 in. (51 cm)
Height [transom]not available
Length - Feet18
Length - Feet23
Length overall - Detail18 ft. 0 in. (5.5 m)
Length overall - Detail23 ft. 6 in. (7.1 m)
Length overall - Meters5.49
Length overall - Meters7.16
Length overall - Inches216
Length overall - Inches282
Length - Metersnot available
Length - Meters7.1
Length - Inchesnot available
Length - Inches6
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thickness0.100 in
Hull thicknessnot available
Hull typeModified Vee
Hull typePontoon
Engine and Drivetrain
Fuel tank capacity - DetailPortable
Fuel tank capacity - Detail56 gal. (212 l)
Drive typeOutboard
Drive typeI/O
Engine max75 hp
Engine max3.0 l - 5.0 l
Fuel tank capacity - Litersnot available
Fuel tank capacity - Liters211.98
Fuel tank capacity - Galnot available
Fuel tank capacity - Gal56
Operational Info
Maximum capacity1,310 lbs. (585 kg)
Maximum capacity2,000 lbs. (907 kg)
Maximum people5
Maximum people12
Pontoon and Inflatable Specific
Tube diameternot available
Tube diameter27 in. (69 cm)
Tube gaugenot available
Tube gauge0.080 in