That is very clean for a Jet boat. Making a wake with a Yamaha is pretty easy. The deep V hull lends itself to a good sized wake with decent drive. The problem is the jet wash. If you drive turning into the wake slightly they clean up and you can see the potential. The single jets do better better because the pump is buried in the water vs off to the side spitting water out. The problem is they are to small. I spent a couple seasons lurking to Surf years ago on my Yamaha.
This summer we bought the boys a 14ft Boston Whaler jet boat. Check out the Wave how clean it is! Had not much weight, but look what a 14ft boat could produce. Demonstrating it is the hull that make s a big difference.
https://www.youtube.com/watch?v=pYa0...OvbFsKXmLTR79g