I don't have any links to the types of watercraft you are referring to, but I have seen folks do some interesting reworks. There was a Glastron 23 that the cut open the bow, but left the dash. You entered the front like you would be entering the cuddy cabin, but then it was open. Actually looked rather neat. Seen other, smaller glastrons with open fishing boat concept. I have a CVZ-18 that is basically a cvx-18 open bow. They made an outboard version that is the CVZ-19. Glastron had several other open bow models. IMHO, you'd be money and time ahead to purchase a craft with the design features you're interested in rather than building one.