Wishing the OP luck in his endeavour.
I had a local gentleman make one for my 2 boats quite a few years ago out of Sunbrella. He did a fantastic job and I thought the cost was very reasonable.
I've since sold the sailboat, but still have the Mako center console.
For anyone else in the same boat - you may want to check for any local craftsmen, as I did.
To purchase online - I've found this company to do a very good job with a very user-friendly website to order from:
https://www.boatcoversdirect.com/