Can always find locale non state ran areas to hike. I live in a fairly flat desert type area and I have been able to located maybe half a dozen good places to spend a few hours hiking. If the state doesnt want you in, try the city / county instead 
As has already been answered, pack animals are not permitted on any portion of the A.T., except the short three mile section where the A.T. corresponds to the C&O canal (Maryland, just before Harper's Ferry).cjf12 said:After looking up some state guidelines for trail use it seems the east coast does not support pack animals of any sort.
WHOOT!So, while our numbers are quite a bit smaller than in the west, goat packing is alive and well on the East Coast!