Get on the Yahoo Group. Very good support group for Nor'sea owners. I have the rare aft-cockpit.
There are some pictures of other boats in the group. The radar on mine is mounted on top of a pole on the stern rail. I'm looking at possibilities for solar or wind in the future, along with other projects. I'm trying to document my work on my blog (see signature below).
The pictures on the Yahoo group can be helpful for ideas. See if you can find pictures of the Nor'sea 27, Daphne. It's been sold to someone else but the previous owner, Teresa, still has pictures floating around somewhere online. Try looking at her current site, Sailing Simplicity
, I'm sure there's still info about Daphne there. Her husband, Ben, also used to have a Nor'sea 27 and owned a BCC after that. Teresa had a simple arch with Solar and a wind vane. Again, more ideas. Even with this simple arch, it still looked pretty good.
Of course, the guys at the Yahoo group do like seeing "boat porn" of other Nor'seas so you can post some more pictures there too.
I've had my boat for a year and learning a lot about it. I enjoy seeing what others have done to their boats. Let me know if there's anything else I may be able to help with.