I put a hopnel tank panel on my 2nd gen. This panel has a removeable pocket. I then cut a piece of velcro to fit the gps unit and stuck it to the hopnel to fit under the pocket. When I want to use the gps, i remove the pocket, stow it in the trunk, and mount the gps (with the matching velcro pad) to the hopnel panel. It makes a nice looking installation, you don't see it when the pocket is installed, and the velcro is never visible when either the gps or the hopnel pocket is installed. The velcro provides a solid vibration free mount, and shows no signs of ever coming loose or otherwise failing.