It depends if it looks like he's trying or not. If he doesn't, he'll be the new Billy Paynter within seconds of his first run out.
No it doesn't. This is NSC. If people decide they don't like someone, it doesn't matter how hard they try. Nothing they do will be good enough. Goals will be ones that were made by others, dismissed because 'one swallow does not a summer make', or jut ignored because a game is 90 minutes and goals are only one part of their job! Effort will be dismissed because sure he tried hard, but he didn't score! Or he needed 5 shots to get a goal. Or his tireless running will be dismissed as 'headless chicken' etc.