Thanks. The technique DanH describes in his thread works in lots of cases. I couldn't quickly find any of my metal work.
I did find my video of a propeller I refinished using DanH's tutorials ...
http://vimeo.com/m/50006571
... and description of the process ...
http://thesalmonfarm.org/blog/p/3395
One of the tips (or tricks) that make a difference is the "sanding blocks". I had some old 2" high density closed cell minicell foam (we use to use rasps and dragon skin to contour it for kayak seats). Anyway, the foam will give a little but only with significant pressure.
I glued my wet sandpaper to these foam blocks - 400, 800, 1200, 1500 grit. Using a misting water bottle, these blocks work great and I see high spots / low spots just as DanH depict in his thread.
I keep an eye out for that foam but I've not stumbled across it since my whitewater boating days. (Probably because I don't know the correct name of the material.)