Just as an FYI... Iowa resident landowners can get a regular statewide anysex bow tag and then also use their 1 landowner tag to get a second anysex, but restricted to their farm, archery tag. In other words, there is potentially a perfectly legitimate explanation to someone harvesting two bucks with a bow each year, provided they are a landowner, etc.
They can then get a third buck with a gun tag. (And this does not even take into account the potential to "party hunt" in the shotgun seasons and potentially take multiple bucks that someone else in the party is willing to tag.)
So be sure of your information before making accusations on the internet.