I whole heartedly recomend that you do fish creek. if you head south on split mountain roadfor @ 5 miles you will get to fish creek, if you get to the mine entrance you have gone just a little too far. go right into the wash, be sure to hike the wind caves. If you are in a descent rig you can continue up to the drop off.
you can get a pretty good map from some of the stores out there that show more than the O'wells OHV area for like 8$ I think the store at desert iron woods(the trailer park west of o wells) is where i bought mine.
any other ?'s

Mike