The long weekend’s your life raft.SEE (with SEA LEGS)Woodshed Collective’s The Confidence ManWhat: Interwoven vignettes inspired by Melville’s book performed on the old steamship Lilac.Why: There are 30 actors, fifteen story lines, one sunset (during the 7 p.m. shows), and a free ticket to ride.When: Thru Sept. 26.Where: Pier 40, Hudson River, b/t Houston & Christopher Sts. Tix and info at brownpapertickets.com.HEARPetty FestWhat: Rolling Stone’s Smoking Section party is an homage to Tom Petty & the Heartbreakers.Why: A drunken romp with members of The Mooney Suzuki, Fountains of Wayne, The Strokes, Little Joy, and Lemonheads.When: Thurs., 8 p.m.Where: Bowery Ballroom, 6 Delancey St., at Bowery (212-533-2111).BUYA Bathing Ape Pirate Store NYC What: His and her merch (archived, second run) at up to 50 percent off; samples and special stock at up to 70 percent off.Why: Don’t monkey around.When: Thru Sept. 7. Fri. & Sat., noon-7 p.m.; Sun. & Mon., 11 a.m.-6 p.m.Where: 286 Lafayette St., at Jersey St.Julie Haus Pops UpWhat: Shop the winter collection and new diffusion line in a temporary apartment loft setup.Why: Whisper DailyCandy to the shopgirl and save 15 percent. When: Today-Sun.Where: 93 Mercer St. , b/t Spring & Broome Sts.French Sole/NY SaleWhat: The original ballerina flat — for $109 or less.Why: Leather slingbacks, embroidered denim, fabric with leather piping, etc.When: Thru Sept. 10. Mon.-Fri., 10 a.m.-7 p.m.; Sat., 11 a.m.-6 p.m.; Sun., noon-5 p.m.Where: 976 Lexington Ave., at 71st St. (212-472-9200).