Lets say I give you permission to hunt on my land, but it turns out you're an idiot and fall out of your tree stand, injuring yourself.
While you're in the hospital watching TV all day, you notice the commercials featuring attorneys that are concerned about your welfare.
All you have to do is pick up your phone and call one of these lawyers, and he files suit against me. Although I didn't do anything wrong, I now have to hire an attorney to represent me.
Like my earlier post, lets say we go to court and a jury of your/my peers decides I now owe you $100K. Hmmmm.
NO WAY am I going to give someone permission to set foot on my property unless they present me with a liability policy.
So, yeah, I think it would help you gain permission on some hunting lands.