Matching a flat Alumaweld Flat Bottom 20 2008 against a modified vee Alumaweld Intruder Inboard 18 2008 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 Inboard 18 2008 measures 18,0 feet overall (2008), giving it roughly 16,0 additional feet of deck space compared to the Alumaweld Flat Bottom 20 2008 at 2,0 feet (2008). Weight tells a clearer story for trailering families: the Alumaweld Intruder Inboard 18 2008 tips the scales at 202 lbs — 188 lbs less than the Alumaweld Flat Bottom 20 2008 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 330 hp, the Alumaweld Intruder Inboard 18 2008 has a 215-hp advantage over the Alumaweld Flat Bottom 20 2008's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Alumaweld Intruder Inboard 18 2008 carries 47 gallons versus 3 gallons in the Alumaweld Flat Bottom 20 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 5 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

At this size, power-to-weight ratio matters more than outright horsepower. The Alumaweld Flat Bottom 20 2008 comes in at 0 lbs per hp versus 1 lbs per hp for the Alumaweld Intruder Inboard 18 2008. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.