The G3 Boats 18 Fish 2007 vs G3 Boats LX 20 2004 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.
Size is the most obvious dividing line here. The G3 Boats 18 Fish 2007 measures 18,0 feet overall (2007), giving it roughly 16,0 additional feet of deck space compared to the G3 Boats LX 20 2004 at 2,0 feet (2004). At 125 lbs and 182 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 100 hp, the G3 Boats LX 20 2004 has a 25-hp advantage over the G3 Boats 18 Fish 2007's 75-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the G3 Boats 18 Fish 2007 carries 23 gallons versus 3 gallons in the G3 Boats LX 20 2004. 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 G3 Boats LX 20 2004 is rated for 11 passengers, while the G3 Boats 18 Fish 2007 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the G3 Boats LX 20 2004 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The G3 Boats 18 Fish 2007 comes in at 2 lbs per hp versus 2 lbs per hp for the G3 Boats LX 20 2004. 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.
The G3 Boats 18 Fish 2007 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The G3 Boats LX 20 2004 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: Choose the G3 Boats LX 20 2004 if your priority is putting more people on the water — it handles 11 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The G3 Boats 18 Fish 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.