@Horton - I'd say to not go with coversports as I had one of their covers that turned my upholstery black because of excessive heat inside the boat. No vents on their covers.
I had a long road with this with my 08' and the best cover (if you can find one) is the factory cover made by Commercial Sewing. This is the same people who make the 200 Nautique cover. It has a ratchet system and is hands down the best cover! I used it on the boat all the way from CO to FL, 1900 miles and it didn't leave a single scratch on my boat also it drum tight so rain just rolls off. Also has vents!
I got mine from Dave Hendricks @ Nautique. Part number #90310
(407) 956-6477.
Good luck! BTW, it's not cheap but sure you can get a good deal.