If you're in the Chesapeake Bay
area, I'd like to help you out. Heck, I'd like to help wherever you are - but can you take good measurements and live with the results if they're not as good as you might think!
I do CADD work at a MD machine shop & am considering doing something similar for my one-huller. An hour or two of sketching and taking measurements, plus another hour to discuss exactly what you need & any competant CADD operator can give you drawings that you can take to a fabrication shop. The trick is in calculating loads, finished weight, and balance (re: attachment points) ... none of which is particularly difficult!
Of course, we're talking totally custom work here ... I'm sure there's another Prout owner out there who's already done all of this and can make the process easier - you'll just have to find him!
Give me a shout if you're interested: email@example.com