When two boats share the same hull type — in this case both the ThunderJet Bull Dog 20 ft. 2012 and the ThunderJet Bulldog 2010 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?
Size is the most obvious dividing line here. The ThunderJet Bulldog 2010 measures 17,0 feet overall (2010), giving it roughly 15,0 additional feet of deck space compared to the ThunderJet Bull Dog 20 ft. 2012 at 2,0 feet (2012). 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 Bulldog 2010'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 32 gallons in the ThunderJet Bulldog 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The ThunderJet Bull Dog 20 ft. 2012 is rated for 6 passengers, while the ThunderJet Bulldog 2010 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the ThunderJet Bull Dog 20 ft. 2012 could be the deciding factor.
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 Bulldog 2010. 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: Choose the ThunderJet Bull Dog 20 ft. 2012 if your priority is putting more people on the water — it handles 6 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The ThunderJet Bulldog 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.