I don't have a Zumo but have a Nuvi 550 mounted. I did not like it on the handle bar so I purchase a mount that will stick to the Goldwing label just below the switch and then purchased a holder that fits the GPS. You can purchase them on ebay. This is a real handy place to see the GPS. Here are pictures of the mounts and where I have it mounted.
Looks good. Same position as mind is. I like the location easy to operate and see.Ok so this is what I came up with.... custom cut a piece of stainless and molded it to match contour of area around ignition switch then bent it to come out .... didnt want holes in original dash ...
Took 400 miles loop to delaware water gap today and hit some bumpy
roAds.... gps didnt move a bit...
NOW I JUST HAVE TO FIGURE OUT WHY MY LEFT TURN FLASHER IS LIT
ALL THE TIME!!!