I am not a lawyer, but just thinking out loud
Some States have a hefty fine for taking a trophy animal without the correct tag.
The VALUE of your trophy should at least equal the "Value" that the State puts on it.
I suspect that that would make stealing your trophy a Felony!
The police may not help you for a misdemeanor, but they might if the ante is raised up to a Felony!
If that person is a homeowner a local lawyer might take the case on a contingency basis if the stakes are high enough!