I've been to Tellico, Harlan, Uwharrie, DPG, Callalantee, Cracker's Neck (now closed), and probably a few more that I can't think of. Harlan is the best place on that list.
One upside is that about half of the hard trails have bypasses that allow you to get the tow rig nearby in case of breakage or simply to let the mildly built rigs tag along.