Conversing with teammates during practice Friday, Spurs center Tim Duncan urged San Antonios players to be smarter with their frequent-flyer miles by accumulating the reward points for one big trip rather than squandering them little by little. I cant stress enough how important it is to practice restraint and never cash your miles for a domestic flight, even if its for a vacation, Duncan was overheard telling guard Kawhi Leonard, at one point bringing the 22-year-old over to a whiteboard to explain how it was more prudent to save the frequent-flyer miles for a trip to an international destination. Just remember to keep your composure and wait. You never know when an emergency might pop up and youll desperately need the miles. I also want to emphasize that if youre not all using credit cards with miles bonuses, youre missing out on an excellent opportunity. At press time, several Spurs reported receiving emails notifying them that they had been shared on a Google doc titled Tims Travel Tips and a spreadsheet named Budgeting Your FF Miles. 