The Triton Boats 21 TRX 2018 vs Triton Boats SF-188 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.
The Triton Boats SF-188 2006 tops out at 150 hp. Engine specs for the Triton Boats 21 TRX 2018 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Triton Boats 21 TRX 2018 carries 47 gallons versus 31 gallons in the Triton Boats SF-188 2006. 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 Triton Boats 21 TRX 2018 is rated for 6 passengers, while the Triton Boats SF-188 2006 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Triton Boats 21 TRX 2018 could be the deciding factor.
Bottom line: Choose the Triton Boats 21 TRX 2018 if your priority is putting more people on the water — it handles 6 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Triton Boats SF-188 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.