If the coach has a DD on the team and she is a good hitter,pitcher,fielder ect...then you might want to give that coach a listen. If their DD is not a good hitter,fielder,pitcher, fielder, ect...then 'smile & nod'.The downside of the "smile and nod" is that some people actually have knowledge which is helpful. So, you have to teach your DD how to evaluate whether the person giving the advice actually knows something...which is, of course, an important life lesson in itself.