We used an army tent with a wood stove when we did an elk hunt back in 2000 when I was an out of stater from oklahoma. Lot of texans, yeah I know, longhorns,lol, were up there with 5th wheel campers, and the such, but could not go in as far as what we did. This isnt always the case though, your mileage may vary. Lot them used horses, or atvs to get back further in. Depending on where you go, a good 4wd may be needed, especially if you lack an atv. We did gmu 55, gunnison national forest. I dont think they can do much for handicap, terrain is just too rugged. ATV may help him out, so he has less to travel. Its doable, just do some research. Wildfires can change things alot from year to year, so once you pick an area, keep up on wild fire news reports for that area. You'll need to make at least one trip to the area before season to plan your hunt out, and where to put your buddy at. Make a plan B as well. Lot of your otc units east of the divide get clogged with metro hunters from what Ive heard, or are rugged, like gmu 86. I liked the western slope personally, and thats where we'll prolly go back to this fall. Youll also need to look into your OHV permits for the atvs and possibly your vehicles. Wilderness areas are motorized vehicle exempt, and you can often find some big ones or good numbers there. Fossil Ridge, and West Elks are a couple that come to mind. Hunting close to them, since your friend cant ride an atv into them may work. Good luck, I pray your friend will get to enjoy at least one good elk hunt out here!