Free: Contests & Raffles.
Everyone who hunts in Idaho has a ATV it seems, and even if the road is gated or considered closed someone will eventually drive around the gate.
Don't get stuck into thinking that you have to be miles and miles in to get into good elk hunting. It can be had closer to the roads
I have a honey hole you can drive a car to and I hunt 100-200 yards from a main road as everybody drives by. There are some big areas near the MT border with no quad trails. Look into areas north and east of Avery that has some big country and few quad trails.