The trouble with the idea of coaching is that many of the top coaches are Russian, Romanian, Chinese people who have found a job that can give them money and away out of the country they are in...Especially in swimming, gymnastics ( The British head coach is Romanian.), track and field, tennis (Andy Murray is now coached by Ivan Lendl.), football etc...
Is John McEnroe considered to be whoring himself working for two tv networks at Wimbledon? or is he that good that he is in huge demand because he gets paid a ton of money.