Unless the perp placed the bodies there only days before they were found and knew it wouldn't take long before they were found by hunters.
It was far from a sure thing, though. That quote from someone about how those two hunters would have missed the bodies if they'd walked five feet to the left or right makes it pretty clear that they weren't easily visible.
The weather is closing in, there's snow predicted for Saturday (first day of season two for shotguns). If those two hunters hadn't found the bodies Wednesday, I'm not sure they would have been found.
Of course, this is Iowa, so who knows? We may be doomed to have a mud winter this year. The only thing worse than snow and more snow is a mud winter.
I'm hoping if someone strongly urged his hunting friends to go hunting at 7 Bridges, those friends will remember that and report it to LE.
I suppose that if the bodies hadn't been discovered and the perp wanted them to be found, he could have figured out some way to anonymously tip off LE. Since that didn't happen, though, there isn't much point in speculating on it.
I have absolutely no basis for the following, it's just a feeling: I think it was immaterial to the perp whether the bodies were found or not. I think he placed them, got out of there without being spotted and that's all he cared about. By that time, all he wanted was to get away safely.