Nav feedback...weight on the bars = Steering stabilizer
I run Charlie's set up pictured above.
Some feedback on the bar mount nav set up. It works great, once assembled and getting the wiring harness organized it's an easy unit to install and remove when I'm not riding roll chart routes.
To me the "pendulum effect" of the mass of the nav gear acts in a similar way to a steering stabilizer. Most of us run a stabilizer of some sort.
Just a thought, I'm sure there is a counterpoint I may not be considering.