I never thought Rocky's strategy of wearing Clubber out by letting Clubber punch him in the head was a good idea.
Also fun fact from Rocky IV. For more realism Stallone wanted the punches to actually land in his scenes with Lundgren. So Stallone and Lungren briefly boxed for real. In two or three blows Lungren had sent Stallone to the emergency room with broken ribs. In the famous training montage scene evidently Drago's punches, which had a device recording PSI, were five times higher than what is considered humanly possible. Had Drago actually hit Rocky that hard Rocky's bones would have been turned turned to powder.