When two boats share the same hull type — in this case both the SunChaser 818 CR 2009 and the SunChaser 820 4-PT. Fish 2011 are pontoon 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 — SunChaser 818 CR 2009 at 18,0 ft versus SunChaser 820 4-PT. Fish 2011 at 20,3 ft. Weight tells a clearer story for trailering families: the SunChaser 818 CR 2009 tips the scales at 1 425 lbs — 1 240 lbs more than the SunChaser 820 4-PT. Fish 2011 at 185 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 SunChaser 818 CR 2009 carries a rated maximum of 50 hp. Engine data for the SunChaser 820 4-PT. Fish 2011 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
For family outings this is probably the sharpest distinction between the two. The SunChaser 818 CR 2009 is rated for 9 passengers, while the SunChaser 820 4-PT. Fish 2011 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the SunChaser 818 CR 2009 could be the deciding factor.
Bottom line: Choose the SunChaser 818 CR 2009 if your priority is putting more people on the water — it handles 9 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The SunChaser 820 4-PT. Fish 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.