For the snow season I only want about 15-20 residentials to remove snow off of walks and driveway. I want a guarantee that theyll use me and also I want to purchase a better snow blower that will allow me to do less shoveling and be quicker as well. Has anyone tried signing up customers by putting down a deposit. I was going to charge the customers about 30 per visit. And there should be more than one snow fall this year, so I was going to have them put down a 50 dollar deposit. Has anyone tried this, and if so does it work?