Both the Lund 1775 Pro-V 2005 and the Lund 186 Tyee GL 2007 are modified-V designs, the first built in aluminium and the second in fibreglass, 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?
The power gap is worth calling out. Rated to 175 hp, the Lund 186 Tyee GL 2007 has a 25-hp advantage over the Lund 1775 Pro-V 2005's 150-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Lund 186 Tyee GL 2007 carries 40 gallons versus 32 gallons in the Lund 1775 Pro-V 2005. 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 Lund 1775 Pro-V 2005 is rated for 6 passengers, while the Lund 186 Tyee GL 2007 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lund 1775 Pro-V 2005 could be the deciding factor.
Bottom line: Choose the Lund 1775 Pro-V 2005 if your priority is putting more people on the water - it handles 6 passengers and at 17,0 ft it has the deck room to back that rating up comfortably. The Lund 186 Tyee GL 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.