At one time I was for two tier membership but have since changed
my mind, IMO haveing sites just for park flyers while banning them
from the regular sites is not a good idea.

I think the best approach is to offer first time members a steep discount
to join the AMA and let them fly what they want and where they want.
Im sure those that get hooked on the hobby will have no problem
paying the full dues the next year, as far as the discount I say charge
the new first time AMA member $10.00 to join up.