Many courses in the desert offer iced towels ??? some scented with mango and other flavors ??? that guests can cool off with, and there???s always water available all over the courses. ???The standard expression is that it???s a dry heat, but there???s some truth to that,??? said Ron Woods, general manager of the Raven at Verrado in Buckeye. ???Your tolerance is greater with a dry heat over humidi