I am going to pick up a couple of threads here:
 
Hours:
We have really focused on trying to be open as many hours a week as possible as the demand is extremely high.  We are currently open Wed, Thur, Fri, and Sat. year round.  We are thinking of adding Tuesdays in the summer with doors closed to the public.  This rarely works, if we are working at midnight we still get people knocking and trying to buy stuff.  We get about 50-70 people a day enter our space for one reason or another. 
 
Our model is similar to most regarding teaching and free use of tools/stands and a desire to get more people on bikes.  Our desire to please, meant that our volunteers started doing jobs for people who didn't want to do it themselves and would rather pay us.  Our volunteers were really stretched and the number one comment we got from homeless/street involved kids was, "I love volunteering and feel like I have found a place to belong but what I really want is a job."  This changed our focus slightly.  We now have 3 part-time "skilled staff" and 3 part-time "unskilled staff" plus lots of volunteers.  Of the 3 unskilled, one is living in a homeless shelter, and two are 14 year old kids living in the neighbourhood.  2 street involved youth who worked for us have now moved on to full-time jobs!  Kids are welcome if they are volunteering or working on their own bike, otherwise they get kicked out.  The appeal of getting a job if they are a helpful volunteer also helps as an incentive.  With all this help, we are refurbishing and selling about 20-30 bikes a week.  This helps us to become sustainable and we are teaching important employment and entrepreneurial skills.  Because we can only create so many unskilled jobs at the bike co-op, we are now in the process of starting a human-powered lawn care service (bikes pulling trailers with reel mowers) targeting youth in our neighbourhood looking for summer employment. 
 
Labour Rates:
Interestingly enough our labour rates have become an issue.  We were charging $3 for a tube or $5 installed.  We thought low cost was good for the community but no one wanted to install their own tube as the $2 extra was a good deal.   We have actually started raising our labour rates to give people a motivation to fix their own bikes. 
 
Receipt Policy:
Regarding money transaction procedures: We run our finances through a church so we have to have accurate sales receipts and account for every penny.  To help this we have a cash register and debit machine.
 
Jeff Neven, volunteer
New Hope Bike Co-op
Hamilton, ON