If you are talking about a winter cover, I have one that I purchased from Fisher Canvas (http://www.fishercanvas.com/). They have patterns for many Parker models, so they made one to fit my 2510. This is my first winter with it, but it is terrific. Fits great and covers the boat down to the waterline. Based on the high cost of shrinkwrap at my marina, the payback is 2 years. Let me know if you need more info.
I have a Fisher also, not my boat in the photo, but you get the idea of what they look like. My cover has 10 winters on it, it should last at least another 10.
I'm looking for a year round cover (so easy on/off) for the boat which will be next to my house on its trailer - I don't think the HOA or my wife would go for a boat shelter. I want something to keep the boat clean but it needs to breathe because of the humidity here. Thanks.
Call Carver Covers direct or check their website. I have used them in the past and they are great to work with. They make the covers for the other websites.