When two boats share the same hull type — in this case both the Princecraft Vectra 19-2S 2013 and the Princecraft Vectra 21 2012 are pontoon 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 — Princecraft Vectra 19-2S 2013 at 19,6 ft versus Princecraft Vectra 21 2012 at 21,5 ft. Weight tells a clearer story for trailering families: the Princecraft Vectra 21 2012 tips the scales at 1 704 lbs — 151 lbs less than the Princecraft Vectra 19-2S 2013 at 1 553 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

Both boats share a closely matched power ceiling — 75 hp for the Princecraft Vectra 19-2S 2013 and 90 hp for the Princecraft Vectra 21 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.

For family outings this is probably the sharpest distinction between the two. The Princecraft Vectra 21 2012 is rated for 10 passengers, while the Princecraft Vectra 19-2S 2013 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Princecraft Vectra 21 2012 could be the deciding factor.