When two boats share the same hull type — in this case both the Crestliner Backwater 1860 SC 2011 and the Crestliner C 1870 VS 2008 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 1860 SC 2011 at 18,4 ft versus Crestliner C 1870 VS 2008 at 18,0 ft. At 88 lbs and 115 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 115 hp, the Crestliner Backwater 1860 SC 2011 has a 40-hp advantage over the Crestliner C 1870 VS 2008's 75-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 C 1870 VS 2008 is rated for 5 passengers, while the Crestliner Backwater 1860 SC 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 C 1870 VS 2008 could be the deciding factor.
Bottom line: Choose the Crestliner C 1870 VS 2008 if your priority is putting more people on the water — it handles 5 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Crestliner Backwater 1860 SC 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.