I tried the rear on front and while it was acceptable, I did find it wobbled at low speed when climbing. I have posts here in bikeforums showing how I mounted it. I now use the Blackburn MTF-1 front rack and find it very solid:

http://www.chainreactioncycles.com/M...?ModelID=14121
http://www.sjscycles.co.uk/blackburn...loy-prod15294/