When two boats share the same hull type — in this case both the Wellcraft 340 Coastal 2009 and the Wellcraft 360 Coastal 2010 are modified vee designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

On paper these two are close siblings in the size department — Wellcraft 340 Coastal 2009 at 34,1 ft versus Wellcraft 360 Coastal 2010 at 36,5 ft. Weight tells a clearer story for trailering families: the Wellcraft 340 Coastal 2009 tips the scales at 135 lbs — 133 lbs more than the Wellcraft 360 Coastal 2010 at 2 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 1 080 hp, the Wellcraft 360 Coastal 2010 has a 330-hp advantage over the Wellcraft 340 Coastal 2009's 750-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Wellcraft 340 Coastal 2009 carries 382 gallons versus 4 gallons in the Wellcraft 360 Coastal 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 Wellcraft 360 Coastal 2010 is rated for 12 passengers, while the Wellcraft 340 Coastal 2009 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Wellcraft 360 Coastal 2010 could be the deciding factor.