If you go to a dealer that sells Maxum's you can purchase the cockpit cover. I don't know if it comes with the snaps pre installed, but last time I checked it was about 700 bucks.
From the picture, it looks like you have a 2100SC. Check out the link I have on my web page for improvements....
I haven't been into the page to modify it in a while, but it will show you a mod that I made that makes the bimini much easier to live with. I replaced that stupid black strap with stainless steel rear support. It cost about 50 bucks to do and now the whole shooting match can stay up with the cover on it.
Tell us a little more about the boat you purchased.