If you're doing it with Boy Scouts, be sure to check their requirements, they've gotten a lot more stringent about that sort of stuff than when I was in back in the '80's.  But they may also have instructors available.  Insurance is going to be the biggie, otherwise I'd suggest asking the Fifth Ranger Training Battalion if any of their guys were interested in helping.  There is a company in Fort Payne, AL, right across the state line, that has campsites and offers rappelling, rockclimbing, and other adventures.  There's also a Boy Scout camp somewhere near Cloud Springs Canyon, IIRC (I know there's a Girl Scout camp up there).  When I was a Boy Scout, we went to Camp Jackson, near Scottsboro, AL.