You could always add a 2nd bottle cage holder, and use the GPS you linked to. It would give you the added benefit of having a bottle cage too. There are various designs out there, see Klickfix BOTTLEfix for example:
Sorry for the lack of direct link, their site makes direct linking difficult. Just use their product search for BOTTLEfix. I see the new version comes with a fancy QR feature that is probably not ideal in this case, but the older version has no QR.
 monkeying around with links [/edit]
Last edited by Juha; 06-07-15 at 06:47 AM.
To err is human. To moo is bovine.
Who is this General Failure anyway, and why is he reading my drive?