I know it's not exactly in your back yard, but if you don't care to drive 3 hours, we have some awesome trails in east TN.
'12 RZR4XP.....heavily mod'd, now driven by the wife
'06 CRF250X (mine)
'06 CRF150F (my oldest daughter's)
'04 CRF100 (my youngest daughter's)
'07 KLX110 (now in storage, waiting on my son to grow into it)
'04 CRF50 (my youngest son's)