I also use a turning block abeam of the secondary. This keeps the lines from getting in the way of cockpit movement. I have run them without and found it awkward by comparison.
A photo showing how this is rigged is here:
http://www.flickr.com/photos/66402598@N00/3484776571/
I started doing that after racing on your boat, and Caitlin HATES it. I think it is safer, she hates the extra drag on the sheets (less feel).
