Both the Lund 186 Tyee GL 2007 and the Lund WC 16 2010 are modified-V designs, the first built in fibreglass and the second in aluminium, 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 150-hp advantage over the Lund WC 16 2010's 25-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Lund 186 Tyee GL 2007 is rated for 5 passengers, while the Lund WC 16 2010 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Lund 186 Tyee GL 2007 could be the deciding factor.
Bottom line: Choose the Lund 186 Tyee GL 2007 if your priority is putting more people on the water - it handles 5 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Lund WC 16 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.