Both the Premier Boats Boundary Waters 310 2007 and the Premier Boats Boundary Waters 310 2008 are pontoon designs, both built in aluminium, so 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 - Premier Boats Boundary Waters 310 2007 at 31,0 ft versus Premier Boats Boundary Waters 310 2008 at 31,0 ft. Weight tells a clearer story for trailering families: the Premier Boats Boundary Waters 310 2008 tips the scales at 5 600 lbs - 1 800 lbs less than the Premier Boats Boundary Waters 310 2007 at 3 800 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 250 hp, the Premier Boats Boundary Waters 310 2007 has a 50-hp advantage over the Premier Boats Boundary Waters 310 2008's 200-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads - 30 gal and 30 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Premier Boats Boundary Waters 310 2007 is rated for 23 passengers, while the Premier Boats Boundary Waters 310 2008 caps at 21. 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 2007 could be the deciding factor.
Bottom line: Choose the Premier Boats Boundary Waters 310 2007 if your priority is putting more people on the water - it handles 23 passengers and at 31,0 ft it has the deck room to back that rating up comfortably. The Premier Boats Boundary Waters 310 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 21 that costs less to run day-to-day.