When two boats share the same hull type — in this case both the Alumacraft Competitor 185 CS 2012 and the Alumacraft Lunker 165 CS 2011 are deep 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 Competitor 185 CS 2012 at 18,7 ft versus Alumacraft Lunker 165 CS 2011 at 16,5 ft. At 142 lbs and 74 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 150 hp, the Alumacraft Competitor 185 CS 2012 has a 110-hp advantage over the Alumacraft Lunker 165 CS 2011's 40-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Alumacraft Competitor 185 CS 2012 carries 35 gallons versus 8 gallons in the Alumacraft Lunker 165 CS 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Alumacraft Competitor 185 CS 2012 is rated for 6 passengers, while the Alumacraft Lunker 165 CS 2011 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumacraft Competitor 185 CS 2012 could be the deciding factor.
Bottom line: Choose the Alumacraft Competitor 185 CS 2012 if your priority is putting more people on the water — it handles 6 passengers and at 18,7 ft it has the deck room to back that rating up comfortably. The Alumacraft Lunker 165 CS 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.