When two boats share the same hull type — in this case both the ThunderJet Alexis 2013 and the ThunderJet Bulldog 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?
Size is the most obvious dividing line here. The ThunderJet Alexis 2013 measures 21,0 feet overall (2013), giving it roughly 4,0 additional feet of deck space compared to the ThunderJet Bulldog 2009 at 17,0 feet (2009). At 32 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 Alexis 2013 has a 318-hp advantage over the ThunderJet Bulldog 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 Bulldog 2009 carries 32 gallons versus 5 gallons in the ThunderJet Alexis 2013. 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 Alexis 2013 is rated for 6 passengers, while the ThunderJet Bulldog 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the ThunderJet Alexis 2013 could be the deciding factor.
Bottom line: Choose the ThunderJet Alexis 2013 if your priority is putting more people on the water — it handles 6 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The ThunderJet Bulldog 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.