Well good for you. I have no affiliation with any government agency. Whether a landowner posts land physically or eposts it makes no difference to me. The intent is the same. My position is permission to trespass should be granted by the landowner alone and not the government taking that right away.
It's that way in nearly every state so it works for them. The loophole for abuse is closed to the criminal element .
First off, there's no "loophole" in the existing laws that allow a hunter to hunt your land. If a hunter shoots an animal and it crosses the boundary from where they have access to hunt to your land, they MUST leave their firearms and/or archery equipment behind. They can only access your property to retrieve their property, not to dispatch a wounded animal. Once they cross that fence while carrying a weapon, they are hunting without permission. Period, end of story. No excuse of "we shot one over there and it's now over here" because they aren't following the "loophole" as you see it.
If they run across the animal and it's still alive, they will either need to sit and watch it die a slow death, or they will need to back out and seek permission from you to take a weapon onto your property to finish the animal off.