When two boats share the same hull type — in this case both the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 and the Riviera Yachts 78 Motor Yacht 2011 are deep 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 — Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 at 80,3 ft versus Riviera Yachts 78 Motor Yacht 2011 at 78,0 ft. Weight tells a clearer story for trailering families: the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 tips the scales at 92 418 lbs — 78 992 lbs more than the Riviera Yachts 78 Motor Yacht 2011 at 13 426 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 1 572 hp, the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012 has a 557-hp advantage over the Riviera Yachts 78 Motor Yacht 2011's 1 015-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Riviera Yachts 78 Motor Yacht 2011 carries 2 117 gallons versus 238 gallons in the Riviera Yachts 75 Enclosed Flybridge Shaft Drive 2012. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 23 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.