This is a great little article but I really liked the pictures. First, look at where the boat is when he is turning in for his gate. Throughout all of my ski history I was turning in when the nose of the boat was about 5 feet from the gate. This fall I changed that and am now turning in much earlier (the left gate and one ball coordinates) and have felt like it is a game changer.
Second, and this one is for @Than_Bogan
, look at the angle from the overhead picture as he passes through the wakes. Perhaps you could measure that angle and tell me what it is? There have been previousl threads where people have discussed the amount of angle you need to generate through the wakes -- this might be a good sample.