Regarding the baiting issue, I have a little insight into it as I am a member of La Delta who got screwed last year.
As I understand it, you can hunt over unharvested crop. However, you cannot in any way intentionally or even unintentionally knock over the crop. What does that mean? I don't know. I think you are ok if your lab knocks some over while getting a duck or if a hunter does the same. Running a 4 wheeler or boat around to get a hole for decoys is NOT ok. as you can probably tell, with this much subjectivity, a game warden with a hard on can ticket you if he really wants to do so.
We had unharvested milo in our field a couple of years ago. To create a hole for our decoys, we physcially cut the tops off of the milo, put it in garbage bags, and hauled it out of field.