I took a dek-it type mount off the boat I bought. In addition to the glare issue, I couldn't angle the unit to either side. I'm not always parked with a foot on the TM pedal, so I'm not always right in line with a display that only faces straight aft. If I'm to one side or the other of the bow, I couldn't see it as easily as I prefer. A RAM mount lets me pivot and tilt the unit for good low-glare visibility from where I want to stand at any given moment. If I think I'm going to take a beating on the lake, I reposition the 9 Touch to be face down on the carpet and snug it up so the RAM isn't trying to hold it up in the air on a rough ride.