I will assume by camping you mean with a trailer. If so, Fairview and Ephraim and 12 mile will not destroy your trailer getting up them. I hunt from Ephraim to Six Mile, and that time of year(early rifle I guess) you can trailer right off skyline. SHEEP. There are a couple of them, and they can help determine where not to go. My advice would be to pick one or two canyons, and STAY there. The Manti is so big and is soo accessible you literally can spend all day just riding around. That time of year you also have the ATV crowds, they will help determine where not to go. Sadly the DWR decided to destroy this hunt by over tagging and killing cows, so there are a lot of elk, but unlike 10-15yrs ago, the quality is WAY down. Dont' pass on too many in the 350 range, you could get lucky, but realistically, 330-350 is very good on this unit. Regardless, it is a blast to hunt!
"The only thing that stops a bad guy with a gun is a good guy with a gun"