Place meat in slow cooker sprayed with cooking spray. Mix coconut water and 1/2 cup of KING’S HAWAIIAN barbecue sauce until blended; pour over meat. Cover with lid.
Cook on low 8 to 10 hours (or on HIGH 4 to 5 hours).
Transfer meat to cutting board; cool slightly. Pull meat into shreds with 2 forks; place in medium bowl. Add remaining barbecue sauce; mix lightly.
Slice KING’S HAWAIIAN rolls in half horizontally; spread HEINZ Mayonnaise in an even layer along the bottom, add pulled pork and coleslaw.
Separate rolls and serve.