I'll never glue a fin again with CA.
Last time I did I lost the fin while flying. Fortunately, I was able to land it without damages (and fortunately it was on a trainer).
I never had any problems with epoxy, so I'll stick to it.
Of course this is just my experience. As I can see on the posts above, some of you never had any issues with CA.
You must be pretty good on the sticks, I have never seen anyone personally loose the vertical stabilizer without crashing the airplane, not even at the last TOC in 2002 when competitor Mike Caglia lost his vertical fin and destroyed his airplane.
Bob