When two boats share the same hull type — in this case both the Hewes Redfisher 18 2008 and the Hewes Redfisher 21 2009 are modified vee designs with fiberglass 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 — Hewes Redfisher 18 2008 at 18,0 ft versus Hewes Redfisher 21 2009 at 21,0 ft. At 197 lbs and 245 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 250 hp, the Hewes Redfisher 21 2009 has a 100-hp advantage over the Hewes Redfisher 18 2008's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Hewes Redfisher 21 2009 carries 48 gallons versus 4 gallons in the Hewes Redfisher 18 2008. 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 Hewes Redfisher 18 2008 is rated for 5 passengers, while the Hewes Redfisher 21 2009 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Hewes Redfisher 18 2008 could be the deciding factor.
Bottom line: Choose the Hewes Redfisher 18 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 Hewes Redfisher 21 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.