Horace,
Thanks. The BLBS definition appears to be less clear than it used to be, but at least now I can tell my friends that this is the case.
To what some others have said, primitive archers shooting in NFAS are simply trying to get a workable open definition agreed that allows us to make and shoot primitive bows be that wide and flat or narrow and deep without getting into an arguament about whether they are longbows or not (as these have a seperate class).
Not slapping down anyone, just trying to keep it on track. Thanks for all the interest, even if it was heated at times!