I rent out time on my longarm.
On the first rental (some places make you take a class), I go through loading a quilt, advancing the quilt, threading the machine, basting the top, sides, and bottom, using the pantos, groovy boards, rulers/ruler base. I hit the basics, then specialize based on whatever the customer wants to do on the quilt. Some places require classes, some don't even allow the rulers (if you hit a ruler, the machine usually has to be re-timed - don't ask me how I know).
The going rate in these parts is about $10.00/hour with a 4 hour minimum.
This is a great way to see if LA quilting is for you. Some people try it once, and say forget it!! It's also a great way to try different machines. They all have a different feel.