I rarely ever buy my license since my family has about 80 acres. All you have to do is go down to the courthouse in your county and get your parcel number, landowner name, relationship, and sign the form.
To those of you in TN, it has been thrown around by TWRA that if they don't get another license increase soon then they may take away the free landowner permits.
And to address the anger about large landowners in NM, do you have high fencing operations out there? Also, isn't NM one of the states that you can actually purchase the wildlife that is on your property? I think there is an acre requirement, but I know in some states a large-scale landowner can buy the wildlife (certain $ amount per animal) and then manage them as they want.