I second making one or having one made if you can. I'm super inexperiencd on a machine but managed to make covers for both my 16 and 14 with sunbrella. Material cost maybe about $200 per boat. I went with separate covers for each hull then a fairly heavy duty tarp to cover the tramp. I did try out an all in one design that included a tramp cover for the 16 but soon realised it was a lot harder and time consuming to get it on a off compared to the separate hull design. Sailrite has a great library of videos to get you up and sweing if you like me aren't experienced.
edited to add: Here's my post about the covers I made for the 14
https://www.hobie.com/forums/viewtopic. ... 23&t=63985
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Hobie Wave 2004
Hobie 14 1991 Plum 40525
Hobie 16 1985 Nationals White Prism 91964
Hobie 16 1985 European Championships Palma 114072