Happy Hiking Average Hiker, the BMT is (mostly) a special route IMO, great choice! If you go in summer there may be some bush-whacking / briar-wading in sections as that trail gets nowhere near the maintenance love of the AT (even in the Smokies).
TN Hiker,
I ran into Sgt Rock and his son fly fishing at West Prong (camp site 18) in the Smokies about a year ago. They were getting into tenkara and having a blast.