Brent at Coversports (a/k/a theprocover.com) is awesome. I have one on my 98 SN and it is second to none. With measurements, he can get you something that fits wonderfully. Plus, he's in Washington, which helps if it needs adjustments.
He just did one based on measurements for the owner of planetnautique on a hull he hand never done a cover for before and it was perfect out of the box according to the boat owner.
Previous: 1993 Prostar 205
Red 1998 Ski Nautique, PCM GT40, 310 hp, , Acme 4 blade, Perfect Pass SG/Zbox.
Be kind. Have fun.