We do it every year. With our DP we set the exhaust brake and start at 60 MPH at the top. When we had a gas rig we started at 45-50 MPH using the "tow-haul" mode. If we got up to 55 I would slow down to 45 and let build to 55 again. I would always slow down in 10 MPH increments and NEVER Ride the brakes. It's not a bad hill if you use common sense.