Tongue is actually really tasty stuff. If you treat it right it's VERY tender. It has a much stronger flavor than other cuts of beef. I make it for tacos with homemade corn tortillas about once every other month or so. Never had it smoked though. Looks great!
Did the hickory penetrate the skin on the tongue or did you have to take it off first?
22.5" Weber Kettle Gold, 30 gallon UDS