I have an idea about this - let's see what you guys think.

After setting up my camera, I would walk in front of it with a sign that says" If the person developing this film is not me(MY Name) , please call me at (such and such phone#) and the police - This camera was stolen!!

Of course, when I drop off a roll of film I would tell the person developing it what to expect, but if a thief is wanting to see what pictures of "deer" were taken, they would not know that there was a picture of me and my sign on there. Catch my drift?????

I think it would be a good idea to take the first 2 or 3 pictures with the sign so that there was a good chance the developers would be able to read the sign for sure and also so that a thief would see there are pictures on there and would therefore be encouraged to take the film in for developing. Curiosity killed the cat!!