When two boats share the same hull type — in this case both the Scout 151 Dorado 2010 and the Scout 191 Bay Scout 2012 are modified 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?
Size is the most obvious dividing line here. The Scout 191 Bay Scout 2012 measures 18,8 feet overall (2012), giving it roughly 4,3 additional feet of deck space compared to the Scout 151 Dorado 2010 at 14,6 feet (2010). At 6 lbs and 13 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 150 hp, the Scout 191 Bay Scout 2012 has a 100-hp advantage over the Scout 151 Dorado 2010's 50-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Scout 191 Bay Scout 2012 carries 42 gallons versus 1 gallons in the Scout 151 Dorado 2010. 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 Scout 151 Dorado 2010 is rated for 6 passengers, while the Scout 191 Bay Scout 2012 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Scout 151 Dorado 2010 could be the deciding factor.
Bottom line: Choose the Scout 151 Dorado 2010 if your priority is putting more people on the water — it handles 6 passengers and at 14,6 ft it has the deck room to back that rating up comfortably. The Scout 191 Bay Scout 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.