How can the Warriors, and for their part the Cavaliers, avoid peeking ahead to each other?He was the advance scout for Cleveland during the regular season and would be the coach leading the film session if the Warriors do, indeed, face the Cavaliers."In the regular season, the advance scout watches the last five games of the team we're playing, to get a glimpse of how that team is playing at a particular moment," Walton said.The Warriors split up the other NBA teams among their scouts and some of the assignments were based on familiarity.[...] among the teams Walton drew were the Lakers (his former team), the Knicks (who are running the triangle offense he played in), and Cavaliers — with whom he spent the final year of his career.If both teams were to sweep, there would be a ridiculously long break before the Finals start (in Oakland) on June 4, during which time Walton can ponder how to stop LeBron James.Before each series the Warriors coaching staff room has pristine, clean white boards on all its walls.