My 6 yr old got up this weekend!

So after a few times having him in the pool with his board and vest on then moving him to the lake he finally got up this weekend. Only took about 3 times in the water with anywhere between 3 and 6 tries each time he finally got up. Now it's second nature to him and all he wants to do is board. Problem is he just hangs out behind the boat, doesn't fall and won't get back in the boat. Road for close to 20 minutes yesterday before he let go just to do it all over again. Now he's taking all of my riding time! Oh well...