If a target is designed to move when activated and it does not do so than it's a REF. REF in both your scenarios as far as I'm concerned.
I agree. Using that logic, you can not shoot the target before it moves. However, the way the rules are written now, I do not think I can penalize someone for engaging it once they have pulled on the activating mechanism. At least and do so pointing to a rule to go with it.
JT
I didn't say anything about when you could shoot the target, I only stated that the target/prop did not function. Therefore REF. I don't care when you shoot them as long as you have begun the activation process and the mechanism operates afterwards.