The Smoker Craft Infinity M-818 F 2005 vs Smoker Craft S-8521 2006 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department — Smoker Craft Infinity M-818 F 2005 at 18,0 ft versus Smoker Craft S-8521 2006 at 21,0 ft. At 134 lbs and 195 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 Smoker Craft S-8521 2006 tops out at 125 hp. Engine specs for the Smoker Craft Infinity M-818 F 2005 aren't listed — confirm with a dealer before selecting an outboard.
For family outings this is probably the sharpest distinction between the two. The Smoker Craft S-8521 2006 is rated for 12 passengers, while the Smoker Craft Infinity M-818 F 2005 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Smoker Craft S-8521 2006 could be the deciding factor.
Bottom line: Choose the Smoker Craft S-8521 2006 if your priority is putting more people on the water — it handles 12 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Smoker Craft Infinity M-818 F 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.