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.