When two boats share the same hull type — in this case both the Crestliner Backwater 1652 Tiller 2011 and the Crestliner Backwater 1870 SC/CC 2010 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 — Crestliner Backwater 1652 Tiller 2011 at 16,0 ft versus Crestliner Backwater 1870 SC/CC 2010 at 18,0 ft. Weight tells a clearer story for trailering families: the Crestliner Backwater 1870 SC/CC 2010 tips the scales at 1 175 lbs — 521 lbs less than the Crestliner Backwater 1652 Tiller 2011 at 654 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 90 hp, the Crestliner Backwater 1870 SC/CC 2010 has a 40-hp advantage over the Crestliner Backwater 1652 Tiller 2011's 50-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 Crestliner Backwater 1870 SC/CC 2010 is rated for 5 passengers, while the Crestliner Backwater 1652 Tiller 2011 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crestliner Backwater 1870 SC/CC 2010 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Crestliner Backwater 1870 SC/CC 2010 comes in at 13 lbs per hp versus 13 lbs per hp for the Crestliner Backwater 1652 Tiller 2011. 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.