I have a Tripacer with a rather "cozy" cockpit. I tried a number of mounting attempts with less than stellar results. I either had glare wiping out the screen or the device blocked vision, controls, etc. The factory yoke mounts were way too big. I took a Ram ball and threaded it, cut the ears off and mounted it to a hose clamp. This was mounted to the yoke mount nesting the GPS inside the yoke.
So far with a white T shirt on in the Arizona sun I can see the screen and all my instruments and controls.
Paul
N1431A
2AZ1