I've hunting this unit since 2004. I killed a bull in 2007 with my bow on this unit. Best advice I can give you is hunt water early in the hunt, and stay on it ALL DAY LONG. Many bulls come in at 1&2PM. Late in the season, (last couple of days) plan on being mobile, and chasing screaming elk as much as possible. With the early season dates this year, I wouldn't try to call them in, I'd only use my call to locate them and then move in on them.
Last but most importantly...pray for cold weather.
You'll have a blast!!!
"Luck is often nothing more than preparation running into opportunity.”
-Some Smart Guy