Join Date: Mar 2008
Location: The Land Down Under
It depends on what you want to do with it. I can see some negatives for a start.
1- In the tank bag, if you want to look at it, it is a big eyes off the road moment, not good.
2. It may be useless in full sunlight, try it and see while stationary, is it useful, I mean they are normally a visual thing, I know the Nuvi has a TTS system but unless it is routed to helmet speakers, not much chop.
If you try this route, why not just mount it up high just below your eyeline and if it looks like rain, put it away.