Nate, I have a whole bunch planted. The nuts are too small to be commercial.
Lets shift gears. Harvesting the nuts is almost certainly a barrier. Essentially to do it commercially you need to monocrop as near as I can tell. You can intercrop in the alleys but the harvesting machines cant pick every fourth tree.
If you are not monocropping, then getting the nutrition from the nuts into you becomes the issue. I have one current strategy, which is eating squirrels and turkeys. They convert the fat and protein maybe 30%. Same with pigs. I would rather have 30% of an intercrop than 100% of a monocrop with much larger inputs. And the squirrels are always available, so no need to store them in a fridge. I have thought about installing buckets and seeing if they will harvest them for me.
The benefit is that you don't need Rocher-approved varieties, just any native hazels will do. So go find some and plant the nuts. You may be able to get them from the state forestry, I pay around 50 cents per.
Pigs can convert a wide range of nuts, I have chinese chestnuts, chinqapin, oaks, and honeylocust. They can really eat a lot in the fall. Then they are delicious and marketable. On 30 acres you could raise a lot of animals, and pastured pork is a premium product. I looked at raising the nuts and found out it was not going to be successful, and I am operating on 10 (maybe 30 soon) acres. In a part of the country much better for hazels.