This is the eval I used at 5 weeks, and will use again at end of term. 
We found the feedback very useful. The students were provided with a 
sum of their scores and aggregated comments from their team-mates 
(all anonymous). Even though I have graduate students, some found it 
very difficult to tell others what they needed to do to improve- but it 
was a growth experience well worth the effort. 
Best of luck in finding an eval that works for you-
Cynthia Evetts, Ph.D.
Texas Woman's University
School of Occupational Therapy