We are yet to log hours, but I hope to implement it this year. Unfortunately, we have some "time wasting" students who sit around and actually slow down our team, so it'll be difficult to get an accurate measure of who is there working, and who is there but not doing anything.

This is my idea:

Have a sign-in sheet with times, and a space for the student to put down what they did before they leave. Then, have a select group of students who are usually always at the meetings, and the mentors work as lookouts during the meetings, and observe what others are doing, and when they arrive/leave. Then, when they review the charts, they can compare what they collectively observed to what the chart says.

Does this seem like a good idea?