Sunny days make Paul Hennessey a happy man. As president and CEO of Hennessey’s Tavern, Inc., his 18 restaurants lure surfers, families and young professionals alike when the warm California sun heats up beach towns from San Diego to Manhattan Beach, with a nod to the sizzling Nevada sun blazing down upon his Las Vegas location. South Bay Digs braved a brooding marine layer to meet with Hennessey at his Riviera Village corporate office, where he raved about the wonders of the iPad and the wisdom of buying wine futures.