[timber_cruiser]

I use a zefal gizmo clamp on my Basso frame. These come in different sizes depending on your frame diameter.

I like these clamps, they do not damage the paint if you lay a thin piece of tape under the strap.

http://www.nashbar.com/profile.cfm?...=1252&sku=3478&storetype=&estoreid=&pagename=