Scott, we have hunted CO, in a draw area, but there is a lot of acreage for OTC tags. Actually, in '09 I bought a leftover tag for the draw area, which may be an option in several states.
Many national forests across the west allow ATV's on some roads, but all ATV's are illegal in wilderness areas. Please respect other hunters who choose to hunt in WA's for the solitude.
There are some great folks on here and on stickbow that have far more advice to offer than I do (no kills, yet!). But, I've seen elk from 5,000 feet up and one book I read even had a picture of a wallow in the middle of a road. However, elk are still harder to hunt that whitetails, imo.
Hugh in TN