Back to the original post, even if he only picked up one an hour he should hit 200 in the week. It depends how you are paying him too, most employed canvassers are on one clean or similar ie basic plus commision.
The other thing to watch is he actually works the hours, motivation is the biggest barrier anyone will face doing this job. If he is on a basic you need to keep an eye or work with him...
If you have any more questions please feel free to ask...