Mike:
I run a similar boat to yours with my fishing partner (Blackwatch 30) and we have a a 1 gig Argonaut marine laptop computer on board mounted in a bracket to the left of the helm and have no problems seeing or using it at all, even in sunlight.
The Argonaut laptop we use is water resistant & has a special "hardened' hard-drive thats designed not to crash from the impact of waves, etc. Its linked to a Trimble dual differential GPS. It runs "Nobeltec Visual Suite" software which is outstanding.
If you ever want to come over to see it this summer at Point Judith just give me a holler & I'll be happy to show it to you.
Heres a link to the Argonaut site: the computers they have now are improved models from what we have obviously; Ours is almost 2 years old now.
http://www.argonautcomputer.com/laptops.htm
Maury on the RAVEN