Skip Gundlach wrote:
Has anyone retrofit dorades to their boats?

Dorades are great. They look "right" when done well, and they do the job
(with some limitations). The downside is that a good installation is
onerous, and an effective dorade (i.e., in the 5" range) is expensive,
especially if you go with bronze or chromed bronze.

First I would not just drill a hole and fit a dorade. You will be most
pleased if you mount a dorade "box" of some sort (either wood or
purpose-built plastic) that retards water ingress, and then mount the vent
itself on the box. This is not simple since most surfaces on a sailing boat
are curved to some degree.

I think you will be happier (and have more leisure time) with the Nicro
solar units mentioned in another post. Get the big ones and start drilling.

--
Good luck and good sailing.
s/v Kerry Deare of Barnegat
http://kerrydeare.home.comcast.net/