I have worked in the consulting branch and talked with a colleague once about some "performance tuning" he did with Pro/E users.  He basically watched them to see if he could give tips about how to be more productive. 

Does anyone have any experience or tips on how to do this in Solidworks?  What to look for, how long it may take, etc?

I am considering setting up some sessions with our users, but want to know what to get any feedback from anyone who has done this first.