When two boats share the same hull type — in this case both the Lowe SD220 2012 and the Lowe ST175 2009 are modified vee 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 Lowe SD220 2012 measures 22,0 feet overall (2012), giving it roughly 5,0 additional feet of deck space compared to the Lowe ST175 2009 at 17,0 feet (2009). Weight tells a clearer story for trailering families: the Lowe ST175 2009 tips the scales at 995 lbs — 777 lbs less than the Lowe SD220 2012 at 218 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 175 hp, the Lowe SD220 2012 has a 100-hp advantage over the Lowe ST175 2009's 75-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Lowe SD220 2012 carries 38 gallons versus 13 gallons in the Lowe ST175 2009. 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 Lowe SD220 2012 is rated for 12 passengers, while the Lowe ST175 2009 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lowe SD220 2012 could be the deciding factor.