I am a fan of system called aurcade http://aurcade.com/aboutus.aspx , hopefully this is different from your program arcade. We use it at flippers in qualifying round in outer banks. It is based on 100 point scale play as many games in allotted time then a percentage is given once you play all games . Some don't like it but having played in a aurcade tournament the past several years it runs smoothly. David hernly runs aurcade and does a great job.