I'm not sure to what extent hiring managers have to interact with the software that powers the co-op process (Jobmine), but as a student who has used it to secure 5 terms of work, Jobmine is definitely up there on my list of the worst designed/most frustrating pieces of software to use. Jobs for CS students are good and plentiful, so its still worth sludging through the system. Looking forward to the replacement, if it ever comes (startup idea?)! (http://www.bulletin.uwaterloo.ca/2011/feb/25fr.html)