LONG BEACH - Long Island surfers looking to relive the waves at last summer's Quiksilver Pro New York Championships will soon be able to watch it any time they like: the event is the subject of a new documentary.Some Soho filmmakers are putting the finishing touches on "Stacked," a 15-minute documentary about the competition. The film gets its title from Balarm Stack, a 19-year-old pro surfer from Long Beach. The Quiksilver Pro was his first major event in his hometown and he is the film's focus.To watch an extended interview with the filmmaker, go to channel 612 on your iO digital cable box and select the 'iO Extra' tab.