When two boats share the same hull type — in this case both the Alumacraft VB 1756 AW Tunnel SC 2009 and the Alumacraft VS170 2006 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 — Alumacraft VB 1756 AW Tunnel SC 2009 at 17,0 ft versus Alumacraft VS170 2006 at 17,0 ft. Weight tells a clearer story for trailering families: the Alumacraft VS170 2006 tips the scales at 852 lbs — 769 lbs less than the Alumacraft VB 1756 AW Tunnel SC 2009 at 83 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 Alumacraft VB 1756 AW Tunnel SC 2009 and 75 hp for the Alumacraft VS170 2006. 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. Both carry nearly identical fuel loads — 16 gal and 16 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Alumacraft VB 1756 AW Tunnel SC 2009 is rated for 5 passengers, while the Alumacraft VS170 2006 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumacraft VB 1756 AW Tunnel SC 2009 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Alumacraft VB 1756 AW Tunnel SC 2009 comes in at 1 lbs per hp versus 11 lbs per hp for the Alumacraft VS170 2006. 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.