I have just fitted an Evotech satnav mount. A bit expensive but the only one I found that I liked that fits in the middle on the handlebars. Ram mount supplied by Tomtom either got in the way of the dash or stuck up at a crazy angle. I discovered that the Tomtom anti-theft device also fits if you want. It only very slightly obscures the bottom of the dash, probably wouldn't if you are taller than me, or leant over.