When two boats share the same hull type — in this case both the Premier Boats Alante 251 2007 and the Premier Boats Boundary Waters 310 SD 2012 are pontoon designs with aluminum 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?
Size is the most obvious dividing line here. The Premier Boats Boundary Waters 310 SD 2012 measures 31,3 feet overall (2012), giving it roughly 6,3 additional feet of deck space compared to the Premier Boats Alante 251 2007 at 25,0 feet (2007). Weight tells a clearer story for trailering families: the Premier Boats Alante 251 2007 tips the scales at 245 lbs — 196 lbs more than the Premier Boats Boundary Waters 310 SD 2012 at 49 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 350 hp, the Premier Boats Boundary Waters 310 SD 2012 has a 200-hp advantage over the Premier Boats Alante 251 2007's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Premier Boats Boundary Waters 310 SD 2012 is rated for 20 passengers, while the Premier Boats Alante 251 2007 caps at 14. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Premier Boats Boundary Waters 310 SD 2012 could be the deciding factor.
Bottom line: Choose the Premier Boats Boundary Waters 310 SD 2012 if your priority is putting more people on the water — it handles 20 passengers and at 31,3 ft it has the deck room to back that rating up comfortably. The Premier Boats Alante 251 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 14 that costs less to run day-to-day.