If you are not interested in the topic, then why bother to post. I'm sure there are other threads around that you could enjoy. Actually I think this sort of attitude is not all that atypical. Too many people want the 30 second sound bites for a solution and if it goes much beyond that they loose interest. Well lots of things, and sound deer management is one, require a little more care and thought if you truly want to understand enough to make good decisions.

Actually, the model I'm using is about as simple as they get. You can find really sophisticated ones that consider far more detail. For example this model simply has post season mortality, some models break it down in to reasons like predation, deer/car etc. Some will allow you to set rates that are not simply a percentage but rather a fucntion of some other variables.