Cape Town - Manchester United striker Robin Van Persie admitted to needing a goal to get back his confidence.
Van Persie, scorer of just three goals this season for United, was clearly intent on improving that tally and a superb header, from a long Michael Carrick pass, came close after 57 minutes only for the Dutchman to be ruled offside in any case.
He did not have long to wait, however, and after 66 minutes, van Persie added a third for United after more poor defensive play by Hull and a wayward pass intercepted by Herrera.
The United midfielder played the pass through for van Persie who scored via a magnificent left-foot finish from just outside the area.
Van Persie said: "If you score a goal like that it gives you confidence and the team, and if I am really honest I needed that,"
"You just have to keep working and those goals, or any goals, will come."