Boatcoversdirect
There have been a few forums on covers, this company, others, etc.
I personally purchased a cover from them for my 265 Express...(trying to do the green thing and figured it would pay for itself vs shrinkwrap in two years)...overall, very happy with everything.
My only issue is because the hard top is so high that the sides dont cover as far down on the hull as i would like but otherwise its perfect! Very durable, easy to put on and take off and it fits from bow to stern very well.
Their customer service is top shelf and can walk you thru the whole process, plus I think shipping was free when we bought it.