I really see no difference in shooting semi-domestic birds thrown from a tower and driven shooting. Neither are "fair chase" hunting. Of course, exploiting one species to help find and kill another species may not be seen as "fair chase" in some circles. I have no more problem with any of this than I have when cutting into a juicy charcoaled Angus steak. The only thing in this area that I have a problem with is when birds are shot but not eaten.

One thing that I don't understand is why it is not possible to manage birds on a private property in the US exactly the same as in the UK to allow really challenging driven shooting of semi-wild birds here.