i've been crew on my friends 50' ketch that has a wheelhouse built over the cockpit. it sure is nice to get out of the wind and rain and sun! we can open the doors and get in and out to the deck quite easily, and the sides of the wheelhouse open up to handle sheets for jibs and access to job winches. but, i notice that most keel sailboats have canvas dodgers. some of them are quite elaborate. but they look rather "tacked-on" and the plastic windows are hardly as clear as glass.
why don't sailboats have built-in wheelhouses or cabins? i'm sure they would be a liability in a typhoon, but not many of them are EVER going to be in that kind of weather.
I didn't find the right solution from the Internet.