Both the Gulf Coast Boats 150 Bay-Skiff 2011 and the Gulf Coast Boats GC 180 2012 are tunnel hull designs, both built 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 130 hp, the Gulf Coast Boats GC 180 2012 has a 100-hp advantage over the Gulf Coast Boats 150 Bay-Skiff 2011's 30-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Gulf Coast Boats 150 Bay-Skiff 2011 carries 62 gallons versus 30 gallons in the Gulf Coast Boats GC 180 2012. 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 Gulf Coast Boats GC 180 2012 is rated for 4 passengers, while the Gulf Coast Boats 150 Bay-Skiff 2011 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Gulf Coast Boats GC 180 2012 could be the deciding factor.
Bottom line: Choose the Gulf Coast Boats GC 180 2012 if your priority is putting more people on the water - it handles 4 passengers and at 17,6 ft it has the deck room to back that rating up comfortably. The Gulf Coast Boats 150 Bay-Skiff 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.