Both the Champion Boats 186 Coastal 2009 and the Champion Boats 186 FH 2008 are modified-V designs, both built in composite, 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?
On paper these two are close siblings in the size department - Champion Boats 186 Coastal 2009 at 18,5 ft versus Champion Boats 186 FH 2008 at 18,0 ft. At 1 900 lbs and 1 950 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.
Both boats share a closely matched power ceiling - 200 hp for the Champion Boats 186 Coastal 2009 and 200 hp for the Champion Boats 186 FH 2008. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Both carry nearly identical fuel loads - 32 gal and 32 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Champion Boats 186 Coastal 2009 is rated for 9 passengers, while the Champion Boats 186 FH 2008 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Champion Boats 186 Coastal 2009 could be the deciding factor.
Bottom line: Choose the Champion Boats 186 Coastal 2009 if your priority is putting more people on the water - it handles 9 passengers and at 18,5 ft it has the deck room to back that rating up comfortably. The Champion Boats 186 FH 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.