ThunderJet Bull Dog 20 ft. 2012 boat specs
ThunderJet
ThunderJet Bull Dog 20 ft. 2012
2012
View full specs →
VS
ThunderJet Denali 2009 boat specs
ThunderJet
ThunderJet Denali 2009
2009
View full specs →

ThunderJet Bull Dog 20 ft. 2012 vs ThunderJet Denali 2009 — A Close Look at Two Modified Vees

When two boats share the same hull type — in this case both the ThunderJet Bull Dog 20 ft. 2012 and the ThunderJet Denali 2009 are modified vee 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 — ThunderJet Bull Dog 20 ft. 2012 at 2,0 ft versus ThunderJet Denali 2009 at 2,0 ft. At 33 lbs and 25 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 320 hp, the ThunderJet Bull Dog 20 ft. 2012 has a 318-hp advantage over the ThunderJet Denali 2009's 2-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the ThunderJet Bull Dog 20 ft. 2012 carries 48 gallons versus 5 gallons in the ThunderJet Denali 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 6 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

At this size, power-to-weight ratio matters more than outright horsepower. The ThunderJet Bull Dog 20 ft. 2012 comes in at 0 lbs per hp versus 13 lbs per hp for the ThunderJet Denali 2009. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.

Bottom line: Performance buyers should lean toward the ThunderJet Bull Dog 20 ft. 2012 and its 320-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the ThunderJet Denali 2009 with its 2-hp rating is the more economical daily driver.
General Boat Info
MakeThunderJet
MakeThunderJet
ModelBull Dog 20 ft
ModelDenali
Model Year2012
Model Year2009
Measurements / Dimensions
Beam96 in
Beam90 in
Beam - Meters2.44
Beam - Meters2.29
Beam - Inches96
Beam - Inches9
Deadrise8°
Deadrise6° Entry 25°
Weight - Detail3,300 lbs
Weight - Detail2,500 lbs
Weight - kg1496.85
Weight - kg1133.98
Weight - lbs.33
Weight - lbs.25
Width [transom] - DetailBottom: 72 in
Width [transom] - Detail78 in
Height - DetailSides: 35 in
Height - Detailnot available
Height - Meters0.89
Height - Metersnot available
Height - Inches35
Height - Inchesnot available
Height [transom]35 in
Height [transom]34 in
Length - Feet2
Length - Feet2
Length overall - Detail20 ft
Length overall - Detail20 ft. 0 in
Length overall - Meters6.1
Length overall - Meters6.1
Length overall - Inches24
Length overall - Inches24
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull thicknessSides: 0.125 in. Bottom: 0.375 in. Transom: 0.250 in
Hull thicknessnot available
Hull typeModified Vee
Hull typeModified Vee
Engine and Drivetrain
Engine/s standard350 cid multi port fuel injected GM Vortec, closed cooling system
Engine/s standardMercury Sport Jet Optimax
ExhaustCatalyzed exhaust with KLS mufflers and intake water strainer (sand trap)
Exhaustnot available
ImpellerTurbo
Impellernot available
Jet pumpHamilton Jet 212 axial flow with JT nozzle, split duct reverse and close coupling
Jet pumpnot available
Fuel tank capacity - Detail48 gal
Fuel tank capacity - Detail50 gal
Fuel tank capacity - Liters181.7
Fuel tank capacity - Liters189.27
Fuel tank capacity - Gal48
Fuel tank capacity - Gal5
Fuel typeGas
Fuel typeGas
Drive typeJet Drive
Drive typeInboard
Engine max320 hp
Engine maxnot available
Horsepowernot available
Horsepower2
Trailer Info
Trailer - DetailGateway 5,200 lbs. capacity galvanized tandem axle bunk
Trailer - Detailnot available

ThunderJet Bull Dog 20 ft. 2012 vs ThunderJet Denali 2009 — Common Questions

Which is the larger boat — the ThunderJet Bull Dog 20 ft. 2012 or the ThunderJet Denali 2009?
The ThunderJet Denali 2009 is the longer of the two at 2,0 feet overall. The ThunderJet Bull Dog 20 ft. 2012 comes in at 2,0 feet, making it roughly 0,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the ThunderJet Bull Dog 20 ft. 2012 or the ThunderJet Denali 2009?
For trailering, the ThunderJet Denali 2009 has the edge at 25 lbs dry weight versus 33 lbs for the ThunderJet Bull Dog 20 ft. 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 ThunderJet Bull Dog 20 ft. 2012 is rated to a maximum of 320 hp, giving it the larger power ceiling. The ThunderJet Denali 2009 tops out at 2 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 ThunderJet Bull Dog 20 ft. 2012 is Coast Guard rated for 6 passengers, while the ThunderJet Denali 2009 is certified for 6. 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.
Which boat has the better power-to-weight ratio?
The ThunderJet Bull Dog 20 ft. 2012 has a better power-to-weight ratio at 0 lbs per hp compared to 13 lbs per hp for the ThunderJet Denali 2009. A lower number means quicker acceleration and faster time to plane — the number that actually matters most on short, sporty boats like these.
Which boat is wider, and does it affect trailering?
The ThunderJet Bull Dog 20 ft. 2012 measures 96" wide, compared to 9" for the ThunderJet Denali 2009. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
Which boat has the larger fuel tank — the ThunderJet Bull Dog 20 ft. 2012 or the ThunderJet Denali 2009?
The ThunderJet Bull Dog 20 ft. 2012 has the bigger tank at 48 gallons, versus 5 gallons on the ThunderJet Denali 2009. That 43-gallon difference translates to roughly 129–215 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the ThunderJet Bull Dog 20 ft. 2012 and ThunderJet Denali 2009 from the same manufacturer?
Yes — both the ThunderJet Bull Dog 20 ft. 2012 and the ThunderJet Denali 2009 are built by ThunderJet. 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.