Here are some pics of my five year old boy and 3 year old girl. We started my three year old boy on skis, than he went on a hydroslide, and than the wakeboard. The problem with this approach was that it was very hard to get him off the hydroslide. My daughter we have bypassed the hydroslide and gone straight to the wakeboard. I would recommend taking it very slow with the little guys. One bad day and they may not try again for a while. I pull my daughter around in shallow water. She has learned what the pull feels like and what it feels like to fall on her stomach. She is still not ready to go behind the boat. She does occasionally ride with me on my board.
My 3 year old daughter learning to wakeboard
My 5 year old son learning to hit a slider made out of 2 windsurfers
Riding the cable park
Hitting a kicker at the cable park.