I've used the feature many times, but only at very slow speeds. And if your coach is one of the shorter models like mine, be aware that going to full raised position may actually lever the hitch equal to or lower than its normal travel mode position, resulting in it dragging anyway, or worse. This is because in order to protect the short driveline, Monaco put limiting straps on the rear axle so the driveline wouldn't be at too steep an angle and overly stressed. My coach's front will lift about 4 inches in front, but only 2 inches at the rear wheels.
I try to feel my way to the half lift point, so at least the entire rig is up 2 inches. HWH designed their system to lift and stop wherever you released the button, but Monaco feared people might drive down the highway higher than Travel Mode, so they overrode that, allowing fallback to TMode when the button is released. A tech once told me the override is easily defeated. Getting the rig to stay at a given lift point so you can concentrate on maneuvering in a tight spot, and not on finagling the Raise button, makes for a much less stressful day.
Joel