"Was cynical about the coaching but I've been proved wrong"
What can I say? I think that the results you achieved with [the board of a multi-billion pound organisation] were marvellous! Having worked with these gentlemen for a little while now, it was very evident that they were now very much more comfortable with themselves on the stage and in front of an audience. They were animated and enthusiastic, and your diredions to them regarding their duties as representatives of their company were spot on. I have always been a bit cynical about what we might get out of the coaching, but I have been proved wrong.