I used a beanbag mount that sets on the dash for my Garmin 660. It was inexpensive and very stable. i don't worry about it falling off and I move it to whatever car we are using and even lend it to friends and family. In the Crossfire it does not block my view through the windshield at all. Since I could not get a "built in" look with a portable, I decided to go with the easiest to move in and out.