need advice on 360
 

My son is close to landing the 360, but we don't know how to help him progress. Looking for suggestions. Here is a video of his attempts last time out. The board is a Victoria Factor.
Thanks
https://www.youtube.com/watch?v=lGfEz5--37o

It might be a weak pump. Well at least it might be part of it. It looks like he is pushing from the bottom of the wake to the top of the wake instead of pushing from the top of the wake down. Start at the top of the wake, and push hard to ride down the wake. Also, How long is the board? I hope this helped!