One thing to remember about access in Idaho is that they allow a motorcycle on hiking trails in a LOT of places.
The first year I hiked into the hills above the locsha I was a couple Mikes and tons of feet of vert up a nasty trail when a bike came up behind me.
He stopped and shut it off, I was pissed. He was super cool. He apologized for riding up on me and asked where I was headed so as to not screw that up for me. I asked why he was riding on a hiking trail. He told me to go back and read the fine print on the sign and get a use map of the area, because it is actually open to bikes.
Sure as hell....he was right. What I have found is it pays to do your research. Some timberland owners have no issues with motorized access, some prohibit it. The FS has use maps that will surprise people what is actually allowed.
A lot of the problems I see are HOW people hunt. I have been on many a road systems that penetrate several miles into the backcountry. These roads drive 10's of miles through prime elk country, but EVERYONE is hung up on a destination....be it the end of the road, or a trailhead.
My suggestion is to find a destination for yourself that is not a destination for others.
Look that map over and find that saddle with water and feed near by that has no trail to it, no parking near it.....Bushwack into a few of those that are 1-2 miles deep and I GUARANTEE that you can find solitude and elk. If you are in that 2-3 miles from a road, which is near impossible....you'll hear elk that don't know what pressure is.
Or hunt destinations and places that an at or bike can go and continue to get pissed off because someone took the easier route than you. Just know that elk will bed on shit you can't stand on. They'll run through shit you can't climb through.
Quit wasting time being pissed about the how they got there and just go hint where elk are and people are not. A side benefit of these areas is that if you in fact do run into a human, it's likely to be a quality hunter and I've yet to not have a great conversation with guys in the backcountry.