Matching a flat Alumaweld Flat Bottom 20 Foot 2009 against a modified vee Alumaweld Intruder Sterndrive 2012 means you're likely deciding between two genuinely 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 Alumaweld Intruder Sterndrive 2012 measures 20,4 feet overall (2012), giving it roughly 18,4 additional feet of deck space compared to the Alumaweld Flat Bottom 20 Foot 2009 at 2,0 feet (2009). Weight tells a clearer story for trailering families: the Alumaweld Intruder Sterndrive 2012 tips the scales at 226 lbs — 212 lbs less than the Alumaweld Flat Bottom 20 Foot 2009 at 14 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 power gap is worth calling out. Rated to 225 hp, the Alumaweld Intruder Sterndrive 2012 has a 110-hp advantage over the Alumaweld Flat Bottom 20 Foot 2009's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 3 gal and 6 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Alumaweld Intruder Sterndrive 2012 is rated for 6 passengers, while the Alumaweld Flat Bottom 20 Foot 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Alumaweld Intruder Sterndrive 2012 could be the deciding factor.
Bottom line: Choose the Alumaweld Intruder Sterndrive 2012 if your priority is putting more people on the water — it handles 6 passengers and at 20,4 ft it has the deck room to back that rating up comfortably. The Alumaweld Flat Bottom 20 Foot 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.