If you want a permanent solid mounted solution check out this techmount sold by Adam at Rocketmoto. Four small holes to through bolt it and your done. Solid as a rock. I have the handlebar mount for my Zumo and love it. It's a nice solid well designed and well built piece. And inexpensive compared to the TT and others at $69.
http://www.rocketmoto.com/index.php/...unt-black.html