I like the looks of that unit, but I'm satisfied using a RAM-D where the base is mounted to my front deck just behind the light standard base, in front of the front console panel. That way it is not quite as directly below my chin - it's easier to gaze down at an angle as straight down when it's mounted a little further rearward. NO, I've never had that D size slip it's grip even is some of the roughest Lake Ozark or Grand Lake rollers we encounter, those can be as ominous as a barge wake on Kentucky Lake!!