When two boats share the same hull type — in this case both the Boston Whaler 110 Tender 2009 and the Boston Whaler 150 Montauk 2011 are modified vee designs with fiberglass 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 Boston Whaler 150 Montauk 2011 measures 15,4 feet overall (2011), giving it roughly 4,4 additional feet of deck space compared to the Boston Whaler 110 Tender 2009 at 11,0 feet (2009). Weight tells a clearer story for trailering families: the Boston Whaler 110 Tender 2009 tips the scales at 424 lbs — 329 lbs more than the Boston Whaler 150 Montauk 2011 at 95 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.

The power gap is worth calling out. Rated to 60 hp, the Boston Whaler 150 Montauk 2011 has a 45-hp advantage over the Boston Whaler 110 Tender 2009's 15-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The Boston Whaler 150 Montauk 2011 is rated for 6 passengers, while the Boston Whaler 110 Tender 2009 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Boston Whaler 150 Montauk 2011 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Boston Whaler 150 Montauk 2011 comes in at 2 lbs per hp versus 28 lbs per hp for the Boston Whaler 110 Tender 2009. 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.