The Wenas Wildlife Area, as the guide book says, has so many hiking opportunities it feels miserly to stick with just one. But given time allowed, I hiked the Big Burn Canyon and up to Cleman Mountain.
First, don't park at the turnout. The 'No Trespassing' signs at the gate are for general provision - you can drive your car through the gate and just park in a convenient area inside. I parked in the pullout, and many wondered what I was doing as they went through the gates.
The guide book is quite accurate getting you to the junction that 'looks like a main road.' It didn't look like a main road to me, but it is the only road heading up the hill in the general area. Continuing on the level leads to a great little camping area, and plenty of creeks for water.
Heading up leads quickly to a camping area on the right, then climbs swiftly into the hills along the ridge with the Canyon to your left. At the first Y, I recommend checking out the on level left trail that goes down to the creek. Beautiful area and great to camp in if it is hot. It was raining/snowing on me, so I continued up.
I wasn't sure where Cleman Mountain was from the directions, but there is not doubt when you get there - the trail drops off steeply. Continue pushing toward better views of a valley - there are some lovely views down to the river valley just south.
There were a few ATV's on the trail, but everyone was very friendly and I talked with a number of people. A great hike for solitude with occasional encounters - at least early season. And watch out for cold/nasty weather. I ran in to a lot of snow when I was climbing toward the top of the pass.