wolfsoul, just a thought, but you might want to check with a few of the show superintendants first, since each show has a designated official photographer (s).

It should be just fine if you take your candid photos only at the owners request with an agreement beforehand. But you wouldn't want to get off to the wrong start by stepping on anyone's toes.

With your skill and a little bit of luck, you could do very well at it. It's very time consuming though!

Good luck!