When two boats share the same hull type — in this case both the ThunderJet Alexis 2009 and the ThunderJet Bull Dog 20 ft. 2012 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?

Both boats share a closely matched power ceiling — 325 hp for the ThunderJet Alexis 2009 and 320 hp for the ThunderJet Bull Dog 20 ft. 2012. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the ThunderJet Bull Dog 20 ft. 2012 carries 48 gallons versus 5 gallons in the ThunderJet Alexis 2009. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.