I know exactly where you were talking about, If its an unfenced area they are legal. I too have chased them hard but never saw one. I saw a picture of 10 in the back of a pick up,last Sat. said to be shot but my connections tell me they were trapped. I've found traps,very nice ones (conservation dept. ?) in areas I hunt around council bluffs lake. So I just gave up trying to shoot one. I can't be there all the time. I do know some guys that have shot some. They cruise the conservation trails or hy 32 With spot lights at 1 in the morning to daylight. One guy drives one guy stands in the back of the pickup and another shoots.
I have baited many spots and the hogs hit it, then I find a trap in there a few days later. I grew up in that area and most folks won't tell you anything. They WANT the hogs so they have something top hunt. There never has been enough deer to make it worthwhile, at least not in that part of Iron Co.