Hull boss Phil Brown insists his side can continue to improve after Michael Turner's 51st-minute header moved the Tigers back to third place in the Barclays Premier League.
Despite City securing their third consecutive win, Brown is convinced there are still strides to be made and described his side's first-half performance against West Ham as "rusty" after the international break.
Brown said: "I think we've got to provide a little bit more quality on the ball because we can't survive on set-pieces alone this season. But my biggest problem before the game was maintaining the success. People were talking about bubbles bursting but my simple answer to a bubble bursting is to blow another bubble."
Despite an encouraging start including two chances for Marlon King, the Tigers seemed to allow their opponents to claw their way back into the game and Carlton Cole should have done better with a 15th-minute shot straight at Boaz Myhill.
Then Herita Ilunga could consider himself unfortunate for being penalised by referee Chris Foy after charging down an attempted Myhill goal-kick, and overhead-kicking the loose ball into the net.
"I spoke to the referee and he said it was dangerous play," shrugged a disappointed Gianfranco Zola afterwards.
"I'm not convinced about that because he didn't touch anybody."
The Tigers grabbed the crucial goal when the London-born Turner outjumped Matthew Upson to head home the impressive Andy Dawson's corner from the right.
City fans may have been chanting for the defender to be handed an England call but Brown insists the 24-year-old needs a little more time to prove himself at the top level.
Brown said: "Where Michael is concerned he'll keep his feet on the ground because he's got good staff around him, and if he does get called up he'll get all the support he needs."
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