** Chasing Mavericks A fond tribute to the perseverance of the actual surfer Jay Moriarty, who, at 16, scaled a 50-foot-wave off the coast of Santa Cruz, Calif. In order to arrive at the great surfing you have to put up with a family movie of aggravating blandness. You have to really believe in messianic innocence and by-the-numbers screenwriting. With Gerard Butler and Elisabeth Shue. Directed, improbably, by Michael Apted and Curtis Hanson. (109 min., PG) (Wesley Morris)
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