Hi folks:
Wow, lots of dimensions to explore in this thread. While I am a huge fan of nuts, I'm not the nut expert. My friend Phil Rutter at Badgersett in MN is coming out with a handbook on hazelnut cultivation through Chelsea Green (same publisher as us). It is expected to release in January.
http://www.chelseagreen.com/bookstore/item/growing_hybrid_hazelnuts
I believe coppice rotations for hazelnut are around 7 - 10 years. Much care should be taken in their establishment. They are best planted as a hedgerow, rather than spacing the shrubs far apart.
As for uses, I am most fascinated with Phil's "chestnut polenta" - see the video we've posted at:
http://farmingthewoods.com/media/
hope this helps!
Steve