The Fish-Rite Fishmaster 15 ft. 2008 is a flat-bottom design and the Fish-Rite River Jet Series 2009 is a modified-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
Size is the most obvious dividing line here. The Fish-Rite River Jet Series 2009 measures 18,0 feet overall (2009), giving it roughly 4,0 additional feet of deck space compared to the Fish-Rite Fishmaster 15 ft. 2008 at 14,0 feet (2008). Weight tells a clearer story for trailering families: the Fish-Rite River Jet Series 2009 tips the scales at 850 lbs - 300 lbs less than the Fish-Rite Fishmaster 15 ft. 2008 at 550 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 Fish-Rite Fishmaster 15 ft. 2008 carries a rated maximum of 80 hp. Engine data for the Fish-Rite River Jet Series 2009 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 Fish-Rite River Jet Series 2009 is rated for 875 passengers, while the Fish-Rite Fishmaster 15 ft. 2008 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Fish-Rite River Jet Series 2009 could be the deciding factor.
Bottom line: Choose the Fish-Rite River Jet Series 2009 if your priority is putting more people on the water - it handles 875 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Fish-Rite Fishmaster 15 ft. 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.