When two boats share the same hull type — in this case both the Premier Boats Boundary Waters 310 Sky Dek RE 2010 and the Premier Boats SunSation LTD 210 RE 2010 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 Sky Dek RE 2010 measures 31,3 feet overall (2010), giving it roughly 10,3 additional feet of deck space compared to the Premier Boats SunSation LTD 210 RE 2010 at 21,0 feet (2010). Weight tells a clearer story for trailering families: the Premier Boats SunSation LTD 210 RE 2010 tips the scales at 235 lbs — 186 lbs less than the Premier Boats Boundary Waters 310 Sky Dek RE 2010 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 Sky Dek RE 2010 has a 250-hp advantage over the Premier Boats SunSation LTD 210 RE 2010's 100-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 3 gal and 3 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 Sky Dek RE 2010 is rated for 25 passengers, while the Premier Boats SunSation LTD 210 RE 2010 caps at 12. 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 Sky Dek RE 2010 could be the deciding factor.

Both are 3-tube and 23-tube pontoon designs respectively. Tube diameter and gauge affect stability and load capacity — more so than most buyers realize when comparing on paper.