You have got to let the kids set their own pace!! It doesn't hurt to give a little encouragement in the right direction. I pushed my oldest son too hard in the beginning and almost lost him. With the help of my wife making me back off, he started to enjoy it more and has found success along they way. Now, with my youngest…..I better end it here; it will take to long to explain.
Bottom line, their kids and they need to enjoy it in the beginning.