Hey guys, I'm just starting. I've got 12 weekly's and 1 bi- weekly. Since my accounts are expanding so is equipment, i'm getting a exmark 48'' ztr this week. My thing is how to keep track of billing, ex; What do you do? Send it? How do you keep track of who has paid, and who hasn't. Just trying to get an idea of how to bill accounts and keep track of it. Keep in mind i'm only 17.. Thanks a lot guys.