Gary,
My boat is a cuddy, not a WA. You lose some access and fishability toward the front, but the cockpit is huge, and there is alot of shelter from the elements. The boat has full covers too, so in case of rain, you stay very dry.
The picture below is of a WA I was looking at that had a top. It's a little small, but it might give you some ideas.
http://www.revcmpsys.com/fishing/picts/boat/wa.jpg.