The Custom Weld 20 ft. Cobra 2013 is a deep-V design and the Custom Weld Sport - 17 ft. 2010 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.
On paper these two are close siblings in the size department - Custom Weld 20 ft. Cobra 2013 at 20,0 ft versus Custom Weld Sport - 17 ft. 2010 at 17,0 ft. Weight tells a clearer story for trailering families: the Custom Weld 20 ft. Cobra 2013 tips the scales at 2 700 lbs - 1 600 lbs more than the Custom Weld Sport - 17 ft. 2010 at 1 100 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 Custom Weld 20 ft. Cobra 2013 carries a rated maximum of 350 hp. Engine data for the Custom Weld Sport - 17 ft. 2010 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Custom Weld 20 ft. Cobra 2013 carries 52 gallons versus 32 gallons in the Custom Weld Sport - 17 ft. 2010. 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 Custom Weld 20 ft. Cobra 2013 is rated for 6 passengers, while the Custom Weld Sport - 17 ft. 2010 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Custom Weld 20 ft. Cobra 2013 could be the deciding factor.
Bottom line: Choose the Custom Weld 20 ft. Cobra 2013 if your priority is putting more people on the water - it handles 6 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The Custom Weld Sport - 17 ft. 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.