Here is a shot of my niece who is 5 years old. She was up and going on her third try. She was waving to the people on shore and then also trying to jump. It was quite comical when she stated "I wanna do tricks!"
My little cousin started when she was 5. Now we cant keep her off the water. Created a monster! Good luck with your many years of being out done by a kid...they learn so much quicker than we do!