John,The Nelson did fine with one course for years,but Colonial is a smaller field invitational ,the club has only one course ,and they are one week closer to the dry season.Also the other Nelson course is on the same property,with the same range and general dullness.Three rounds on the TPC is plenty.It also helps spread the crowds out.Rich Beem did a classy thing today:he dressed up in the same outfit as the Salesmanship Club .These guys spend many hours and the Nelson is by far the biggest contributer to charity on tour.