47Pの1行目から‘You don't do it if I don't cooperate,you need me to give you some hair.’‘Well, that's that plan scuppered,’said George.‘Obviously there's no chance at all of us getting a bit of your hair unless you cooperate’なのですが、ここに出てくるhair(髪?)って助け・・とかそうゆう意味でしょうか?ここはハリーを説得してる場面なんですよね?