2Eagle,
I dont see how regular relates to active, a scout may attend meetings but may not participate. Let me give an example we recently had a Life Scout transfer in, this kid rarely talks to anyone, does not interact with the other scouts, does not play in the patrol games however just because he walked in the door your unit would call him active.
You say your unit calls active, regular and you mentioned that under 50% isn't regular and if your not regular your not active. Please correct me if this is not accurate I may have misunderstood but isnt that putting a number too it?