You have them , through the videos , surveys and offers for free credits . I have been playing this game going on 4 years now for free . Never spent a penny out of pocket . Every club upgrade or ball purchase has been done through earning free credits . I havent done any surveys since they changed the format but I do continue to watch the videos .
Just from the videos alone from June 2014 to now , I have earned over 15000 free credits . Since my last club upgrade , I am still sitting on over 9400 free credits and counting . So you have plenty of sponsors , you just have to use them . Many players like myself have played our way through the game this way and still do . I have played from Hack to Tour Legend this way and you can too . Just put your time in , do the videos and surveys for free credits and enjoy the game . Hope this helps. :-)