Dale, can't speak for Pro Trainer but had my grandaughter at the Wichita State Shocker bowling camp in July and they use Bowler map and what a great tool.  It is easy to use and does about anything you would want from converting Walter Ray to a left hander to measuring distance between each step.  I was surprised WSU was using bowler map as it is an ebonite program and they seem to be heavy with Brunswick.  By the way, I live just south of Joliet.