If they want the PRO players to follow the time limit rules, then they need to have PRO workers running the course, not volunteers. The marshalls fail to stop people from crossing the course in time before the players at the tee boxes are ready to hit. I have witnessed this countless times at the 06&07 PGA and last years BMW championship. I am not saying that was a problem in Sundays round, but I know that it happens, yet the Pros are still required to follow the time schedule. Doesnt make sense.....
If delays happen due to crowds they should be taken off the clock. Its not fair to the players that have large crowds following them that they are required to keep up to the players that have half the gallery.